Theo Todman's Web Page - Notes Pages

Personal Identity

Thesis - Personal Identity

(Work In Progress: output at 19/09/2025 20:44:10)

Colour ConventionsPrevious VersionsNote ReferencesNon-Note ReferencesNote CitationsNon-Note Citations

Preface

Chapter 1: Introduction22

Abstract
  1. This Chapter provides a motivating statement for the study of the particular path through the topic of Personal Identity I have decided to pursue and gives a brief historical survey of the subject to situate my particular stance.
  2. Why should we care about the topic of Personal Identity? In one sense, this question of “why” hardly needs answering, as it’s just about the most important question to be posed by a reflective (if maybe self-obsessed) person.
  3. Historically, answers to the question of what Personal Identity consists in have provided – or so Locke hoped – grounds for the possibility of life after death.
  4. Yet, the question of what personal identity consists in is difficult and has had many attempted solutions offered. While some philosophers23 think there is no problem left to solve, there is no consensus as to the solution. In any case, before we can answer this question, we need to clarify it and decide what sort of beings we persons are.
  5. My favourite paradigm – in the sense of the one I think most likely to be correct, rather than necessary the one I’d like to be correct – is Animalism24. This is the claim that we are human animals and that consequently death is the end of us. This sensible – if to many disappointing – view is only supported by around 17% of philosophers, according to a 2009 poll25 with about twice as many philosophers supporting some form of psychological view26.
  6. In one sense it is just obvious that we are – in some sense of that weasel word “are” – human animals. But then the problem cases kick in – whether actual real-life cases or thought experiments (hereafter ‘TEs’) that may never be real-life possibilities.
  7. About 36% of the respondents in the aforementioned survey though we could survive teletransportation27 – though 31% thought that the result would be death.
  8. Transhumanists28 think we can be uploaded29 to computers, which makes no sense if we are animals. Or so I claim.
  9. So, how did we get to this lack of consensus?

Chapter Introduction
  1. This chapter could cover more ground than any number of PhD Theses. Its purpose is simply to prepare the ground – and clear the way – for detailed investigation of the dispute between Animalism30 and the Constitution View31, as well as to demonstrate that I do – at least to some degree – understand more of the wider question than that in the narrower focus pursued in detail later.
  2. There are many fine introductory books – and General Surveys32 – on the topic of Personal Identity, and I don’t intend to compete with them here. What I want to do is situate what I want to say in its historical context. I haven’t supplied this section with a detailed scholarly apparatus.
  3. Of course, the modern discussion of Personal Identity has been a series of footnotes to Locke33, so it’s important to understand just what Locke thought on the subject, what positive insights he had, and how – in my view – he led us all astray on the subject. One positive aspect of his thought is to stress that the topic is a Forensic34 one; it has ethical implications and motivations.
  4. Historically – and indeed presently – the majority of philosophers (and probably most ordinary people) hold to some form of Psychological View35 of personal identity. Our Psychology36 is deemed so important to us that it is (allegedly) constitutive of what we are. The Psychological Criterion37 is supposed to explain how we persist over time.
  5. We need to analyse Psychological Continuity38 in general, but the backward form falls prey to reduplication objections: multiple distinct individuals may consider themselves the psychological continuers of a single individual, but the logic of identity39 denies that this is possible. But, it’s difficult to gainsay the psychological view in the face of experiential Forward Psychological Continuity40. If it seems to me that I continue to exist during some adventure during which I’m continually conscious, it would be difficult to deny that I do; or so it seems to me.
  6. There’s a major sub-plot of the psychological view to do with Memory41, which – while admitted not to be the only psychological element of importance – has been beset with problems since Locke’s days, having been refined into quasi-memory42 to avoid begging the question. David Lewis’s Methuselah43 thought-experiment also stresses the memory-criterion.
  7. Finally, there’s the question of dreamless Sleep44. Just what happens to the persistence of the person during this period, in the absence of either the Body or the Organism defining identity?
  8. In this section, I at least briefly discuss the positions of some of the major philosophers who have held neo-Lockean views (or other views not discussed later in this thesis). This would be an endless task, and the ones chosen – Descartes45, Leibniz46, Hume47, David Lewis48 and Derek Parfit49 – are those that happen to have come up50.

Main Text: Brief historical survey of the topic of Personal Identity
  1. General Surveys51
    1. Before starting on the detail of research in Personal Identity, it is necessary to be familiar with the terrain. This involves reading some general introductory books and reading the papers in the standard collections.
    2. There are many fine introductory books on this topic, and I don’t intend to compete with them here. What I want to do is situate what I want to say in its historical context.
    3. A good place to start to survey the field is with "Olson (Eric) - Personal Identity - Oxford Bibliographies Online". I seem to have everything, more or less, on this list – though the list deals with more than general surveys.
    4. The majority of the Introductory texts52 and general surveys that treat of Personal Identity were compiled in the last century and reflect the concerns of the time, which was basically the dispute between holders of the then majority position – the Psychological View53 (PV) – and those supportive of the Body Criterion54. The latter view, which will be discussed in Chapter 255, has largely been replaced by the Biological Criterion56 (Animalism57), though the Brain Criterion58 is still somewhat popular in preserving the advantages of both the PV and the Body Criterion.
  2. Locke59
    1. Locke was responsible for setting the terms of engagement for the modern discussion of Personal Identity.
    2. It was Locke who first – or at least most famously – made the distinction between the Person60 and the ‘Man’.
    3. The ‘Man’ is these days variously cashed out as the Human Being61 or Human Animal62, though for much of the time since Locke the division has been between the Mind63 (thought of as what the person really is) and the Body64.
    4. It is occasionally claimed that philosophers prefer the mind to the body, and are naturally inclined to take the “mental” side in these debates. While that may be true, the consciousness envisaged as definitive of our identity is not that of philosophical contemplation, but the everyday sort enjoyed by cobblers and the rest of us. It includes appreciation of all things bodily, and is the ground of everything that matters65 to us.
    5. Locke was correct in saying that the term Person66 is a forensic concept67; that is, it has to do with ethical matters. He was also right to connect the topic to the then concern with Resurrection68.
    6. However, while he’s correct to distinguish the person from the “man”, I believe him to be wrong in supposing that the “person” is separable from the “man”.
    7. Rather, we69 are human beings (human animals70) who happen to have the property71 of being persons, maybe – and contentiously – only possessing that property for periods of our lives. This property cannot be transferred to some other entity or – if it can – that ‘other entity’ has undergone a change rather than becoming the new container for a mobile and ghostly entity.
    8. For Locke, the Person72 is individuated by a locus of consciousness and extends as far at that consciousness73 extends. No doubt for much of the time since Locke, this locus of consciousness was thought of as an immaterial Soul74, though Locke himself wasn’t specific that this is the case, which makes the thought experiments75 – from Locke’s ‘Prince and Cobbler’ onwards – easier to credit. However, for some time, immaterial souls have not been an option for most philosophers.
    9. All I otherwise have to say on Locke is covered by my final-year BA essay76.
  3. Forensic Property77
    1. Locke78’s recognition that there are important Forensic – that is, moral – aspects to the topic of Personal Identity is as true today as in his own day, even though we might not share his primary concern in justifying the importance of identifying the resurrected79 with the pre-mortem individuals.
    2. Animalism80 says that psychology has nothing to do with the metaphysics of our identity – in that we continue on as the same animal – if we do – irrespective of our psychological states and history. While this may be true, most of what matters81 to us in our Survival82 is psychological, and ethical, and our concerns about praise and blame, and especially punishment, remain.
    3. Also, forensic matters are central to the Concept83 of Person84, even if we are85 not – most fundamentally – persons, and Person is an honorific rather than a Substance86 term.
    4. Forensic matters are central to discussions as to whether – and if so why – all human beings87 are persons for the entirety of their lives.
    5. Finally, Animalism is especially well-motivated in considering – for forensic reasons – whether certain Non-Human Animals88 are suitable for admission to the class of Person, maybe of reduced degree89.
    6. I reject Frankfurt’s proposal (see "Frankfurt (Harry) - Freedom of the Will and the Concept of a Person") that wantons90 are not persons91, on the grounds that they do satisfy the other standard conditions of personhood: they satisfy rationality and linguistic conditions, have a first-person perspective92 and survival93 matters94 to them.
    7. The issue of the punishment of already-reformed or amnesiac criminals has been thought relevant to issues of personal identity, as though any reluctance to punish was tied to doubts about identity. Such doubts only reflect confusion on the purpose of punishment; it depends whether we think of punishment as reformative, retributive, a deterrent, or merely treat incarceration or execution as a necessary evil for the protection of society95 (by eliminating the source of harm).
    8. Only if we think of punishment as reformative, so there’s no point punishing the seriously repentant, might we have doubts about the propriety of carrying out the punishment. However, the reason isn’t that the criminal is a different person but that the needed reformation has already taken place.
    9. From the other perspectives, for instance the retributive, there is still a point to the punishment of the already-reformed criminal (cf. C.S. Lewis’s advice – probably in "Lewis (C.S.) - Mere Christianity" – to the converted murderer as to his Christian duty – it is “to be hanged”; presumably because this was, in Lewis’s day, his debt to the state, to which, as a good Christian, he must submit), and the temptation to provide reasons not to doesn’t arise.
    10. With respect to amnesiacs, again there’s only a reluctance to punish on the reformatory view, but again the reluctance has nothing to do with questions of identity, but of the attempt at reformation being ineffective or even counter-productive. If I’m punished for something I can’t remember doing, I’m likely to resent the authority that punishes me.
    11. There is a question of whether persons96, as distinct from human beings97, are the subjects of special moral concern, or whether it is the reverse implication – that those for whom we feel a special moral concern should be accounted persons.
    12. Whether all persons are morally equal is another matter altogether. This is relevant because if the Great Apes were to be counted as persons, of what moral status would they be? See "Rachels (James) - Morality without the Idea that Humans are Special", in "Rachels (James) - Created From Animals: The Moral Implications of Darwinism", for “Moral Individualism”, the view that difference of moral treatment should depend only on the individual’s characteristics, not their group membership, though thus baldly-stated this raises huge questions.
    13. The Great Ape Project (absurdly, it seems to me; see "Cavalieri (Paola) & Singer (Peter), Eds. - The Great Ape Project - Equality Beyond Humanity") demands moral equality between humans and the great apes, on the grounds that the latter have intellectual capabilities on a par with human 2-3 year-olds. Even human beings aren’t equal in their capacities, but we can invent a law demanding that we treat them equally, and we can enact a law extending this moral equality to encompass the great apes, or even stones, if we like. If the great apes satisfy the criteria for personhood, they are persons, but the right to equality of treatment is only loosely connected to capacities.
  4. Psychology & The Psychological View
    1. Introduction
      1. In the arguments between those supporting psychological continuity98 and connectedness99, and those preferring bodily continuity100, the question what we are101 often seems to have been forgotten. Maybe it has often been assumed that Person102 is a substance103-concept?
      2. This is still assumed by those who think that Persons – whether as Souls104 or reified First-Person Perspectives105 – are separable from the infrastructure that – in normal circumstances – “grounds” them.
      3. But, for most people these days it is – or ought to be – obvious that the default position is that “we” are human animals, and that the consequences that stem from this have to be lived with.
      4. But it is difficult not to be – and maybe correct not to be – satisfied with this. We may end up with a “Hybrid106” account: we are animals, but even so, we “go where our psychology goes”. In particular, the brain transplant107 intuition is difficult to escape from.
      5. If this is so, the answers to our questions will rest on just where our “psychology” does – or can (in the widest sense) – “go”.
      6. Transhumanists108 imagine all sorts of scenarios whereby “we” are uploaded109 to a computer. Even were this practical it assumes that “we” are our mental contents rather than the things that enjoy these contents. This strikes me as continuing a mistaken route in the history of philosophy taken by supporters of the psychological view110, and continued by Parfit111 and his supporters.
    2. The Psychological View112
      1. The Psychological View – hereafter the PV – is the view, originating with Locke113, that the matter of primary importance in matters of personal identity is psychological continuity114 (or maybe of psychological connectedness115). Indeed, this view – which was dominant until fairly recently (and maybe still is, given the Bourget & Chalmers survey) – is stronger, in saying that psychological continuity and connectedness are constitutive of Personal Identity.
      2. No-one denies that our psychology116 is important to us117, but making it constitutive of our identity has led to much confusion and paradox.
      3. I think, however, that Elselijn Kingma is incorrect in diagnosing the popularity of the PV as due to philosophers being intellectuals.
      4. The PV encourages the idea that the same human being118 may not be the same person119 throughout its life120, or that the same person may “hop” from one human being to another as has been considered in many TEs121.
      5. I wish to deny both these possibilities.
    3. Psychology122
      1. If we adopt the Psychological View123 of Personal Identity – which I don’t – then it is psychological factors that are important in determining our persistence criteria124.
      2. However, while these factors do matter125 to the survivor126, they don’t matter in the binary sense of “have I survived or not” unless we take the Psychological View127 and make such factors constitutive of personal identity. As an animalist128, I do not.
      3. Supporters of the PV129 - or even the CV130 - tend to stress the discontinuity between the psychologies of human and non-human animals131. Animalists132 tend to focus on similarities, or continuities, as an evolutionary argument for animalism133.
      4. Because Psychology is so important to us, it is important to consider just what is important in it, and how it is grounded in our brains134 and bodies135. The idea of the Embodied Mind136 is very important when we consider phantastical ideas such as Uploading137.
      5. We must consider not just memory138 but other psychological capacities, including character.
    4. Psychological Criterion139
      1. The Psychological Criterion is the use of psychological facts as a criterion of personal identity, as definitive of whether we persist or not. So (on this view) if we want to know whether a person survives or not, it’s matters of psychological continuity or connectedness that we must investigate.
      2. In general, doubts arise about whether an individual has persisted if there are too radical changes in its properties in
        1. a short space of time (failure of continuity) or
        2. over longer stretches of time (failure of connectedness).
      3. These factors can be in tension140, as had been noted since Reid’s “Brave Officer” objection to Locke’s “memory criterion”, and Lewis’s Methuselah141 case. Identity is an equivalence relation, so transitivity is expected. Yet it is not necessarily respected in the case of memory – because continuous so-called memory-identity fails to lead to connectedness over long periods of time.
      4. Another factor I have noted is that there’s a distinction between the evidential force of forward and backward psychological continuity, covered later.
      5. Roughly speaking, the Psychological View (PV)142 of Personal Identity is that which argues that
        1. Questions of our identity are settled by psychological facts.
        2. We are most fundamentally psychological beings.
        3. We come and go when our psychology comes into or goes out of existence.
        4. We cannot survive radical changes to our psychology.
        5. And so on.
      6. I reject this whole approach if matters of identity are uppermost in our minds. However, if we’re talking about what matters to us in survival, then psychology is obviously important.
      7. In relation to the above distinction between continuity and connectedness, …
        1. See "Blackburn (Simon) - Has Kant Refuted Parfit?" for what Blackburn calls the Unity Reaction143: we cannot envision fissioning144: our FPP145 would just seem to go on in one direction only.
        2. Because of reduplication146 problems – as in the “inconceivable” fission case above – at least in the absence of perdurantism147 – no amount of backward psychological continuity is sufficient for identity.
      8. This is all rather complex:
        1. We anticipate forward psychological continuity – and while we’re continuously conscious, this is what we experience, and this seems to be evidentially sound.
        2. Yet our checking is always based on backward psychological continuity. But, in the absence of evil demons, this doesn’t seem to be a problem.
        3. The issue arises in the case of traumatic cases of discontinuous consciousness, where we don’t know how we arrived in our present state. We’d then need to rely on third parties. My point is that no amount of inner conviction is sufficient proof, as distinct from when we are continuously conscious.
      • Psychological Continuity148
        1. Like any persisting thing, the persistence149 of a psychology requires continuity to an appropriate degree of the entity supposedly persisting: hence ‘psychological continuity’.
        2. I’m not quite sure what ‘a psychology’ is supposed to be, but it is supposedly constitutive of personal identity for those accepting the Psychological View150
        3. Popularly, we say that an individual is ‘not the same person’ as they were before if their character or aims differ too much from that former state. Hence, such characteristics would seem to be constitutive of a psychology.
        4. It is usual for someone’s character to develop gradually over time, often in a positive sense, though there may be Dorian Grey like declensions. However, there can also be sudden changes, as when someone has a religious or political conversion experience, though – even there – there is continuity of more general psychological factors.
        5. We are comfortable with gradual changes – new memories are added and lost gradually, and tastes stay fairly constant; knowledge is acquired gradually. But, over time, these gradual changes accumulate to the degree that one might not recognise the child in the adult, say. But usually, we allow that such gradual changes are identity-preserving, even though psychological connectedness151 is to some degree lost.
        6. All this is associated with one’s First Person Perspective152 (FPP), one’s window on the world153 from which standpoint one anticipates the future, enjoys the present, and remembers the past.
        7. So, psychological continuity (and connectedness154) is central to personal identity for those who adopt the Psychological View155. However, it is said by some animalists156 - Eric Olson in particular – to be irrelevant to our survival157, given that we are158 Human Animals159.
        8. Following on from discussions on survival160, maybe the way to put things is that without psychological continuity I might survive, but not with what matters161 to me in survival.
        9. If “Person162” is a phase sortal163 of “Human Animal164”, can there be sequential but different persons within the same animal (as Lewis165 suggests, though not from the perspective of animalism166, in his “Methuselah167” case) or can there be different and encapsulated First Person Perspectives168 (either synchronically – as in MPD169 – or diachronically) within the same animal?
        10. “Person” may indeed come apart from “animal”, but even then, the person cannot “float free” of the animal, but supervenes170 upon it. See the CV171 for this.
        11. I also distinguish between backward and forward psychological continuity172. The former – traditionally involving memory173 and psychological traits – is the usual focus, but it is not necessarily identity-preserving even for those espousing the PV174, on account of reduplication objections175. The same may be true of fission176 of the FPP177, but this is more difficult to imagine.
      • Forward Psychological Continuity178
        1. I think there’s a conceptual difference between:-
          1. Forward psychological continuity, and
          2. Backward psychological continuity.
        2. For example, in the teletransportation179 thought experiment180, it seems to me181 that a new person wakes up, but I don’t wake up, nor do I experience anything, though the new person claims to be me. Incidentally, it’s not just a new person182, but a new human being183 who wakes up.
        3. Imagine the case where184 I’m put into a duplicating machine185 that is intended to take a backup copy of me while preserving the original but where something goes wrong and my body is destroyed by the duplication186 process, though my duplicate wakes up perfectly happily. Then, it seems to me, I187 would never wake up and would have no future experience after entry to the duplicating machine. I would have no forward psychological continuity.
        4. However, my duplicate188 would have backward psychological continuity. Any duplicate of me, looking backward, would consider himself to be “me”, having my memories189, abilities, plans and so forth, and a body looking just like mine. But would I190 ever wake up as the duplicate? My intuition191 on the endurantist192 account, as I have said, is that I would not, though I suspect that on the perdurantist193 account, this might be seen as a case of intended fission194 in which I was intended to wake up twice, provided we consider that the right sort of causality195 is in place.
        5. The above considerations raise issues similar to those in closest continuer196 accounts of personal identity, and the Only 'X' and 'Y' Principle197. How can what happens to someone else affect whether (so to speak) I am me? How could the “right sort of causality” have anything to do with how I experience things?
        6. Fission is, in any case, hard to imagine happening to oneself. Just what does it mean to “wake up twice”? I dare say one could get one’s head(s) around it. The two selves would then be distinct individuals, with distinct consciousnesses, but with a shared past. On the perdurantist account, we were always distinct, but had stages co-located with everything in common.
        7. I think there are connections here with the topic of Intermittent Existence198. There is backward psychological continuity after putative intermittent existence, but no forward psychological continuity.
        8. Let’s consider forward psychological continuity in everyday life. What ensures forward continuity of consciousness199 in the normal case of sleep200 and temporary unconsciousness? I cannot know “from the inside” that when I awake I’m even the same human being201 as the one that went to sleep in my bed. The reason I believe that I am – rather than that a duplicate body has been created and my psychology transferred into it – is for external reasons: duplication202 is not physically possible (or at least practical), and in any case I have no reason to believe it happened to me last night. Other people assure me that there was nothing out of the ordinary going on.
        9. Andy Clark203, raises this question about what ensures psychological continuity – more or less than in the case of Teletransportation – in the case of dreamless sleep, or (hypothetically) being frozen and then thawed out. We might ask what it is in the normal waking case. Maybe the whole thing is related to the arrow of time204 or in the distinctions between forward-looking psychological properties – desires and intentions yet to be satisfied or acted upon – and backward-looking memories of what has already taken place.
        10. This distinction is the sort of question that the Logical Positivists would denounce as meaningless, as no empirical evidence can decide it.
        11. I will try another thought experiment205 I’ve been considering. It’s often said in the literature that if Teletransportation206 became commonplace as a means of travel, and was conventionally207 deemed to be such, rather than as a means of death208, then life would carry on just fine. Indeed, no-one could notice and difference, either from the inside or outside.
        12. Let’s try a variant: imagine (as maybe many US citizens do) that each night when you’re tucked up in bed technologically-advanced aliens spirit you away and perform horrible experiments on you, in the process scanning your whole body so they can replace your mangled corpse with a perfect duplicate of the original that had been sleeping happily, and return this simulacrum to your bed. Naturally, your partner and anyone else would be unaware of any of this. Also, the person who wakes up – just like the teletransportee – would have no reason to think anything amiss. He would consider himself the same person as went to sleep209 the night before. Life would carry on ‘happily’. Yet in this – admittedly phantastical situation – our sleeper only lives for under 24 hours before coming to a grizzly end and being replaced by someone else. His experience ends on the operating table aboard the starship. If the reality became known, no-one would dare go to sleep. Maybe teletransportation is less grizzly, but it leads to the same death and recreation.
        13. Maybe one could cavil at the details of the experiment: maybe it’s just not possible to extract the information from a human body sufficient to create a duplicate210 without destroying the original, so all the medical experimentation isn’t possible without a mangled body being returned, which would certainly be noticed. So, we might need to modify the TE so that your body is scanned – without anaesthetic, of course, to ensure this isn’t an experience you’d be comfortable with – and two copies are created – one for experimentation and the other for returning to bed. Then, one copy-you lives on happily for a day, and the other meets the grizzly end.
        14. Now, what could make the waker the very same consciousness211 as the sleeper in this scenario? Usually, it is said that there needs to be the ‘right sort’ of causal connection212, in particular one internal to the continuant. In this case, there is a causal connection, but it is imposed externally by aliens and their (maybe tendentiously named) duplicating machine. Are objections based on causality of the wrong sort anything more than intuitions that others might not share? I leave this open at the moment.
        15. On the Constitution View213, we are individuated by our First Person Perspective214. As far as I can see, all these duplicates are qualitatively identical215 (that is, exactly similar216), and so are their FPPs.
    5. Memory217
      1. Obviously, if I were to become tempted by the Psychological View218 (PV) of personal identity, I would have to give a detailed account of memory here. But as I’m not, I won’t.
      2. Though quasi-memory219 is the more relevant concept for those espousing the Psychological Criterion220, it depends on the concept of memory itself.
      3. While neither version of memory is constitutive of personal identity, even for those who espouse the PV, memories represent much of what matters221 to us in Survival222.
      4. In this regard, I might note in passing that some of the supposed memories that matter most to us may not be true accounts of what actually happened – assuming there even is such a single true account, and especially one that includes any ‘mattering’, in the first place.
      5. It may be his supposed memories that convince the experiencer thereof that he has survived some escapade in a TE223 when in fact he has not.
      6. Loss of memory – amnesia – occurs as a regular trope in Thought Experiments224 associated with the PV. We are asked to consider whether such memory-loss is sufficient – on this view – to make it the case that one Person225 ‘dies226’ (or, at least, ceases to exist) and another comes to be.
      7. As a reminder, there are two forms of amnesia:-
        1. Retrograde Amnesia: see "Wikipedia - Retrograde amnesia". This condition can occur in cases of trauma where all memories prior to the date of the injury are lost. More recent events can be remembered (and forgotten) as normal.
        2. Anterograde Amnesia: see "Wikipedia - Anterograde amnesia". In this case, a brain injury or other factors prevent the laying down and recall of memories after a particular date. See "Wearing (Deborah) - Forever Today - A Memoir of Love and Amnesia", for example. Earlier memories can usually be recalled as normal.
      8. I just remark here that there’s a distinction between the loss of memory and failure to recall. This applies to retrograde amnesia and – of course – in everyday life for most of us. In anterograde amnesia, the condition is not – in real life cases – so severe that no memories are saved at all, but they only retained briefly and are lost in a matter of minutes, as in the case in the book cited above.
      • Quasi-Memory227
        1. One problem with Locke’s memory theory of Personal Identity228 is that it is prima facie circular. A memory can properly only be had by the person who had the experience, so cannot be used to analyse “Person229”.
        2. However, “Quasi-” prefixes do not presuppose ownership.
        3. Snowdon puts it this way230:-
          1. There is a causal linkage L linking a person’s memory to that person’s history.
          2. There is – we may suppose – a neural trace laid down at the time, and re-activated during an act of remembering.
          3. This trace might be transferred – again we may suppose – to some other subject by micro-surgery.
          4. This new subject thereby Q-remembers an event that he did not experience.
          5. So, since Q-remembering does not presuppose the identity of the person doing the Q-remembering with the person involved in the event Q-remembered, Q-predicates can without circularity be used to analyse personal identity in terms of psychological continuity and connectedness.
          6. Or so it is said.
        4. In "Snowdon (Paul) - The Self and Personal Identity" (reviewed here231), Paul Snowdon attributes the establishment of the terminology to "Parfit (Derek) - How We Are Not What We Believe", pp. 219-23, and a major critique to "Wiggins (David) - Personal Identity".
      • Methuselah232
        1. David Lewis’s Methuselah thought experiment233 - in "Lewis (David) - Survival and Identity" - seems to be a reductio ad absurdum of the psychological connectedness234 approach to personal identity.
        2. I’m unimpressed by Lewis235’s solution. Firstly, can there really be an uncountable infinity of persons236 residing in a single body237? But why not? Lewis thrived on pressing credibility so we might let this pass.
        3. The “no prudential concern for the future” argument also seems to be another reductio of the connectedness approach. If I’m not the same person as the future occupant of my body, why make provisions for him. Yet, he’ll share my first-person perspective238 and I’ll be psychologically continuous239 with him.
        4. Of course, Lewis’s model (of a 137-year cut-off for psychological connectedness) is admittedly too crude. Parfit240 sees temporally extended persons as persons of reduced degree241, according to the degree of connectedness. However, this seems to destroy the natural growth and maturation of the person.
        5. I’m still the same person as was my immature self, even though most of my hopes and desires have changed. If I’m in control of my life, I own these changes, brought them about, and often think them for the good.
        6. What about where I don’t own them, but regret my corruption (moral and physical)? It’s still my corruption that I regret. I’m the same human being242.
        7. It depends what concept243 we want to use the term “person” for. We always have to distinguish personality244 from persons.
        8. Finally, consider Saul Kripke on individuation by origin245. Is this a possible objection to overlapping persons? If a person’s origin is what individuates246 him, how is it possible for persons to have vague247,248 origins as in an un-simplified Methusalah case? There are two issues here that need spelling out.
    6. Sleep249
      1. In the context of Parfit’s250 Teletransportation251 TE252, the thought253 is that the “pulling yourself together” that the individual does on awaking is very closely analogous to what happens in the “reception pod” in teletransportation. If this is right, then either the awakening sleeper is not identical to the one who went to sleep, or the teletransportee is indeed identical to the individual who set off, and teletransportation is indeed a form of travel.
      2. I don’t believe any of this. However, it needs to be considered carefully as it’s central to the Psychological View254, which says – roughly speaking – that we are255 most fundamentally mental substances, and there has – since Descartes – been an issue about whether the thinking thing has to be continually thinking, and the dreamless sleep was the classic case of when it appeared not to be.
      3. Another context in which the word “sleep” is used is in the New Testament (Pauline) account of (believers’) death256 – and the state of the dead between death and resurrection257, which is described as “sleep”. This is also referenced in Hamlet’s soliloquy (“perchance to dream258”).
      4. There’s a mildly heretical Christian view – called “soul sleep” by detractors (though those that hold the view tend not to believe in immaterial souls) – that the individual experiences nothing between death and resurrection259.
      5. Of course, we refer to the euthanasia of animals as “putting to sleep”, but this isn’t understood to mean anything significant about the post-mortem state of the animal260.
  5. Other Philosophers of Note
    1. Introduction
      1. Apart from Locke, discussed above, almost every major philosopher – both historical and contemporary – has had something to say about personal identity, whether or not it has been a major area of concern. How could it be otherwise?
      2. I have chosen a few that have featured in my researches. Some of these – together with other philosophers – will appear again in later Chapters.
    2. Descartes261
      1. Descartes is important as the initiator within modern philosophy of the psychological view262 that we are263 thinking things (res cogitans).
      2. He also initiated the use of Thought Experiments264 in the topic of personal identity. In my view he introduced (or confirmed) the muddle within philosophy that what is (clearly and distrinctly) conceivable is possible265. This will be considered in Chapter 10266.
      3. He will be considered further in the Chapter 2267, under the head of Cartesian Egos268.
    3. Leibniz269
      1. I’m uncertain whether I will have anything to say on Leibniz apart from Leibniz’s Law(s), which are covered under the Logic of Identity270.
      2. However, Leibniz’s critique of Locke’s account of personal identity, in "Leibniz (Gottfried) - What Identity Or Diversity Is", may be worth following up.
      3. As may his wider criticism of Locke in "Leibniz (Gottfried), Remnant (Peter), Bennett (Jonathan) - New Essays on Human Understanding", though I suspect life’s too short.
    4. Lewis271
      1. David Lewis’s views on personal identity are characterised by his espousal of perdurantism272.
      2. As is discussed under that Note, perdurantist metaphysics avoids the reduplication273 problems for identity-preservation following fission274. See also my Note on Counting Persons275.
      3. Lewis is also important for espousing realism with respect to possible worlds. The modal276 counterpart relation is used as an analogy in exdurantism277. I will not discuss any of this here.
      4. Lynne Rudder Baker charges Lewis with trying to reduce the First Person Perspective278.
      5. Lewis discusses the Thought Experiment279 of Methuselah280, important for the Psychological View281 of personal identity. Lewis espouses the PV282 and thinks that several Persons283 can exist successively in a single human animal284.
    5. Parfit285
      1. Parfit is famous for the dictum “identity is not what matters in survival”.
        1. I have a note – What Matters286 on this, which I cover along with other general metaphysical matters in Chapter 4287.
        2. My view remains that there must be some confusion in this dictum, in that survival288 is the same as persistence289, and without identity there is no persistence, so identity is a necessary condition for survival and must, therefore, “matter”.
        3. There may well be situations wherein other things matter – either to others or to myself – more than my survival, but this is not the same thing.
        4. Also, Parfit espouses a psychological view290 of personal identity, and has many interesting things to say on whether – given the psychological difference between myself now and my future self – I should make provision for someone to whom I am only weakly psychologically connected291, and whether others should honour advance directives made by my former self292.
        5. My view on that remains that I’m stuck with my FPP293, which persists (though it may degrade) through all the changes in my psychology, and that prudence demands that I take this into account. It matters.
      2. In addition, Parfit has invented or refined a number of interesting TEs294 to do with Fission295, Fusion296 or Teletransportation297, which will receive attention in their due place in Chapter 10298.
Concluding Remarks
  1. To make any progress on this topic, we need to come to a conclusion as to what sort of thing we are. We discuss this in the next Chapter
Chapter 2: What are We299

Abstract
Chapter Introduction
  1. This Chapter spends most of the time discussing the sort of things that I think we are NOT. Like the preceding Chapter, this one could run and run, so can only provide a superficial summary.
  2. Discussion of our being Persons300 is reserved for Chapter 3301, the next Chapter.
  3. Discussion of our being Organisms302, specifically Human Animals303, is reserved for Chapter 6304.
  4. The first obvious candidate for What We Are305 is Human Beings306, but this is – or has become – a rather obscure term of art in philosophy, not that it’s any clearer in general parlance, where it can mean many things that have their carefully demarcated terms in philosophy.
  5. It was once an up-and-coming idea, in reaction to the Psychological View307, that we might be Bodies308, but this idea has been replaced by Animalism309. The Body Criterion310, despite having the advantage of Bodily Continuity311, is more difficult to define than the persistence of Organisms312.
  6. No-one would think that we are Brains313 unless forced into that corner by various Thought Experiments314 and this leads on to the further possibility that we might be individual Cerebra315. Nevertheless, the Brain Criterion316 should be taken seriously, particularly as the criterion of Brain Death317 for our demise seems to at least incline towards the view that that is what we really are. I’ve included a discussion of Brains in Vats318 in this section, as it covers a number of cases including that we might be living in a Computer-Simulated world.
  7. I will address the concept of a Soul319 as souls were once the major counter-claim to the persisting entity being an animal; or at least popularly so. However – scientific objections aside – the Soul Criterion320 is difficult to make out.
  8. Then, there’s the suggestion that we might be Selves321. This is a highly complex topic, which might be segregated in three main topics:-
    1. Candidates for what the self might be – the ‘I322’, or Cartesian Ego323. The latter leads on to Dualism324.
    2. The connection of the Self with Narrative Identity325; the sort of thing people mean when they say Bloggs is not the same person as he used to be. Because the concept of Race326 as a determinant of narrative identity is so topical, I’m including a discussion in this section.
    3. The reason people think they might be Selves is because they are Self-Conscious327 (ie. conscious of being selves, rather than being shy). Thinking about this requires brief forays into Consciousness328 studies, including Supervenience329, Functionalism330 and philosophical Zombies331.
  9. An intuition332 I do not share is that we might be “Patterns in Information Space333”. This is the sort of intuition that Transhumanists334 have, and will be considered in detail in Chapter 10335.
  10. There are Bundle Theories336, at one time espoused by Hume337, which seem to put the cart before the horse, in saying that we are nothing but bundles of “perceptions”, when – it seems to me – these “perceptions” have to be had by something, and this something – whatever it might be – is what we are.
  11. There may be Hybrid Theories338 which try to get the best bits out of more than one of the main-line theories, usually in response to awkward TEs or unusual circumstances.
  12. Finally, there are Nihilists339 who pretend to deny that we exist at all, or at least – as Buddhists340 committed in the interim to Reincarnation341 – claim that our aim should be not to exist.

Main Text: What are We?
  1. What are We?342
    1. The use of the plural in the question “What Are We?” is significant, as we will see in the course of this Thesis when we consider the social and reciprocal aspects of what it is to be a Person343. However, the determination of “we” as “the sort of entity likely to be reading this paper” isn’t quite right, even though Daniel Dennett and others use similar expressions.
    2. We should refer to the first parts of "Brandom (Robert) - Toward a Normative Pragmatics" in "Brandom (Robert) - Making It Explicit: Reasoning, Representing & Discursive Commitment" for inspiration on “We”.
    3. “We” implies a reciprocal relationship. We find others (of “our” sort) intelligible, and it is important that they find us intelligible in return. Does this thereby make R = “finds intelligible” an equivalence relation, dividing the world into equivalence classes of mutually intelligible individuals, or does R come in degrees and fall prey to Sorites paradoxes344?
    4. Nonetheless, should we not start with the singular, maybe even solipsist, question “What Am I?”, and expand out from there into the collective question? How we phrase our initial question has an impact on the course of our investigations, and may reflect our deepest intuitions. The first-person question adopts the Cartesian stance of looking from the inside out, whereas the third-person question considers “us” collectively. The first-person question may presuppose that the answer to the question is that I am primarily a psychological being, whereas the third-person question may assume or expect the answer that I am fundamentally physical.
    5. Some of the potential answers to the question will be the same whether we phrase the question in the singular or the plural.
    6. Taking it in the plural for now, we need to distinguish, as candidates for what we might be on the physical side, (prefixing “human-” passim):-
      1. Animals345,
      2. Organisms346,
      3. Bodies347,
      4. Beings348 and
      5. Brains349.
    7. On the psychological side, I might be a Self350 or, more popularly, a Person351. I might even be a non-essentially-embodied entity like a Soul352.
    8. I will consider all these options in due course; with the exception of a detailed discussion of the concept PERSON353 (which is reserved for the Chapter 3354), I will do so later in this chapter.
    9. Olson, in "Olson (Eric) - What are We? A Study of Personal Ontology", also considers whether we might be Humean Bundles355 of mental states and events, and even the Nihilist356 view that we don’t exist at all. While I won’t have space for a detailed discussion of all of these possibilities, we need to remain aware of the motivations for these positions.
    10. However, for the moment I want to consider some themes connecting the possible answers to our question. Firstly, does there have to be a single answer? I know that I, and presume that my readers also, fall happily under the concepts HUMAN ANIMAL357, HUMAN ORGANISM358 and HUMAN BEING359. I at least have a human body and a human brain, though I would initially feel reluctant to say that I am one of either of these things. I would certainly claim to be a SELF360, and also a PERSON361, as no doubt would my reader. So, cannot all these answers be correct?
    11. This raises the question of what I mean by saying what I am (or we are) something. In saying that I am any of these things, what sort of relation is the “am”? Am I using am in the sense of an identity relation, a constitution relation, ascribing a predicate, or have some other sense in mind?
    12. There are two kinds of questions I want to ask.
      1. Firstly, what sort of being am I identical to?
      2. Secondly, what sort of properties do I have; both metaphysically essential properties (those without which I would cease to exist), and those I merely consider essential (that is, “very important”, though I would continue to exist without them)?
    13. Any “is” that does duty for the identity relation inherits the formal properties of an equivalence relation; in particular, it is a transitive relation. Additionally, the “two” identical entities either side of the copula must satisfy Leibniz’s law362; “they” share (at a time) all their properties; actual and modal, intrinsic and relational. So, if I am identical to a human animal, and also identical to a human person, then that human animal must be identical to that human person. This would mean that these “two” entities are really one. They co-exist at all times in all possible worlds where either of “them” exists, and share all their properties and relations, at any time and world. Everything that happens to “one” at a world and time happens to the “other” at those coordinates. This places strong logical constraints on how much cake I can have and eat. I may want to say that I am identical both to a human animal, and to a human person, yet claim that a human person has certain mental properties essentially but deny that a human animal does. However, I am then claiming what is logically impossible, at least for the classical logic of identity363 that denies that such notions as relative identity are coherent. As we will see, this point is essential to the animalist case that we are not identical to human persons (given the claim that we are identical to human animals).
    14. My thesis addresses the topic of personal identity, but we might claim that what we’re really interested in is in our identity. Not that we have doubts as individuals as to which particular individual we are (as though I, as Bill Clinton, don’t know whether I am Bill Clinton or George W. Bush), but what sort of individual we are, together with worries about our persistence (how long we are going to last, and in what form). Historically, it has been a standard presupposition that what we are most fundamentally is persons364, or at least that’s all we care about. So, concern about our identity has been elided with concern for personal identity, almost as though we thought that the two questions are the same. Animalists argue that the two questions are indeed different, but for convenience, and the historical continuity of the general topic under discussion, still say they are talking about personal identity.
    15. The above hasn’t attempted to answer our question. Rather, it has sought to consider the sort of desiderata necessary for formulating and answering the question, and for deciding between the various candidate answers, which are considered later on.
    16. No doubt the best place to start is
      → "Olson (Eric) - What Are We?" (the Paper), followed by
      → "Olson (Eric) - What are We? A Study of Personal Ontology" (the Book).
  2. Candidates for what we are, considered in later Chapters
    1. Human Animals365: It is my contention that we are identical to human animals, and this view is discussed in detail in Chapter 6366.
    2. Organisms367: This view is a variant of (or component of) the above, and is covered in the same chapter.
    3. Persons368: That we are Persons is the mainstream view, both in philosophy and in common sense. I discuss what Persons are supposed to be, and evaluate the view that that is what we are, in Chapter 3369.
    4. Patterns in Information Space370”. This will be considered in detail in Chapter 10371.
  3. Candidates for what we are, considered in this Chapter
    1. Human Beings372
      1. At first sight, it seems both obvious and uninformative to claim that we are human beings. However, things are not that simple.
      2. Firstly, is there is a difference – real or formal – between human beings and
        1. Human animals373,
        2. Members of the species homo sapiens374 and
        3. Human organisms375?
      3. I assume there’s a distinction between a human being and a human person376, as “person377” is an honorific and – I claim – human persons are phase sortals378 of human animals.
      4. For the primary argument proposing that “we” are human beings, see the – maybe slightly idiosyncratic – work of Mark Johnston in:-
        1. "Johnston (Mark) - Human Beings",
        2. "Johnston (Mark) - Reasons and Reductionism", and
        3. "Johnston (Mark) - 'Human Beings' Revisited: My Body is Not an Animal".
      5. Johnston’s view is that human beings are constituted by379 human bodies380. I have two comments on this:-
        1. This superficially sounds like Baker381’s Constitution View382. However, Johnston doesn’t think the human person is separable from the human brain/body as in the case of Baker’s reified FPP383.
        2. Despite this, Johnston doesn’t think that we are (identical to) human animals.
      6. Johnston tries to tread a middle course between animalism384 and the psychological view385.
        1. He wants to be a naturalist – accepting the modern scientific world-picture and rejecting dualism386.
        2. However, because he thinks that what matters387 to us is our mental life, he considers us to be a locus of mental life.
        3. But, this locus is not “inchoate” or “bare” but has to be provided by our organ of mentation – namely the brain388.
        4. Where he differs from the animalists389 is in his response to the brain transplant intuition390 (BTI).
      7. So, for Johnston, a human being is – for usual practical purposes – a human organism, but is only “constituted” by one – it is not identical to one, for two reasons:-
        1. He – along with most people – accepts the BTI, so he thinks you can be “pared down” to a “mere brain” and then transplanted into another human body. That human being would then be you. Also, like Olson391, he doesn’t think “mere brains” are organisms392; but – unlike Olson – he doesn’t consider the human brain to be “just another organ”.
        2. Further, he thinks a human being is necessarily capable of appropriate mental activity. So, in the case of you falling into a PVS393, you – the human being – could be outlived by your human animal.
      8. Thus – for Johnston – “human being” is a rather odd concept: it is a locus of mentation, naturally embodied and not portable other than by transplanting the organ of mentation. The brain isn’t a mere organ, but – if transplanted or a BIV394 – a maximally mutilated human being.
      9. At the moment, I still incline towards animalism – that we are human animals; and that we can survive total and irrevocable loss of mentation, though in the process we also lose all that matters to us.
      10. Also, I think that there’s only a difference of emphasis or terminology between “human being”, “human animal” and “human organism”.
      11. This (probably) commits me to arguing that a disembodied human brain is a maximally-mutilated human animal.
      12. An alternative working out of a ‘human being theory’ of PID is put forward by David Wiggins, according to "Ferner (Adam) - Metaphysics and biology: a critique of David Wiggins’ account of personal identity". This is important, but I have yet fully to get to grips with it.
    2. Bodies395
      1. The idea that we might be human bodies is a rather outdated and tentative reaction to the once (and maybe still) predominant view amongst philosophers that we are basically psychological beings.
      2. The "physical continuity396" view of personal identity is a wider view of PID than the Bodily Continuity397 view as it encompasses either the body or the brain398, with the latter being more important, so that the physical continuity is satisfied by a BIV399, which would thereby continue your existence should you end up in that unhappy state.
      3. Somatic continuity is underplayed by philosophers who (while engaged in philosophy) focus more on mental predicates than would those less intellectually-inclined. This is pointed out by Feminist philosophers. For instance, …
      4. See "James (Susan) - Feminism in Philosophy of Mind: The Question of Personal Identity" and her objections to Bernard Williams’s and Anthony Quinton’s hasty avoidance of the somatic aspects of “body swapping400” – ie. where very different bodies are involved, especially of different sexes; also, the depersonalising effects of trauma.
      5. However, there may be confusion here between two meanings of “what matters401”. Of course, it matters to the ballet dancer or heavyweight boxer that they are appropriately embodied, but this is beside the point as far as personal identity (in the logical402 sense) is concerned. It matters to me if I lose a leg, but I’m still the same person if I do (because I continue to have the same first-person perspective403 – it’s me that cares that I’ve lost my leg).
      6. That’s why the “Future Great Pain Test404” ("Unger (Peter) - Identity, Consciousness and Value" / "Williams (Bernard) - The Self and the Future") is so useful – it focuses the mind on whether it will be me that survives405, even in the sad cases where I’d prefer it if it wasn’t.
      7. Despite the above comments, and while focus on the body (that is, the brain) is an improvement on focus on the mind (considered as psychology abstracted from its physical enabler), focus on “the body” has been superseded in philosophical popularity by animalism406 and a focus on the organism407.
      • Bodily Continuity408
        1. Historically, philosophers have been divided into those that hold that our409 persistence criteria 410 are fundamentally psychological411,412 and those that think they are fundamentally physical413.
        2. The classic paper that wrestles with this dilemma is "Williams (Bernard) - The Self and the Future".
        3. Bernard Williams is sometimes thought of as an Animalist414, possibly because415 he’s inclined to accept the Bodily Continuity (as against the Psychological Continuity 416) approach to Personal Identity. But, this is probably a mistake, because:-
          1. The “Bodily Continuity” view of personal identity is not to be confused with Animalism417, which requires the Biological View 418. The Bodily Continuity view is consistent with my persisting as a Cyborg419 or even an Android420. See also421 Siliconisation422 (the gradual replacement of my brain with silicon chips).
          2. Also, the persistence conditions 423 of bodies424 differ from those of organisms425 in general or human animals426 in particular. Consider the arguments about corpses427, which have different persistence conditions to those of animals, and which gives rise to the “Corpse Problem”, an attempted refutation of animalism 428.
        4. Lynne Rudder Baker consistently – and mistakenly, in my opinion – contrasts her Constitution View429 with that of a bodily view, rather than a biological view. She considers that we persons430 are constituted431 (maybe temporarily) by our bodies432, though her view could be improved somewhat were she to choose organisms as the constituting entity.
        5. Eric Olson distinguishes between organisms and bodies and is doubtful about the existence of the latter433. But he would disagree with Baker even if she claimed that we were constituted by human animals.
        6. Note also, the distinction434 between continuity435 and connectedness. Continuity is critical to the persistence of bodies, but it is doubtful whether connectedness is. You could probably replace all the parts of a body over time, provided this is done gradually enough, and retain the same body (this is certainly true of organisms). However, it is said by some (eg. Parfit436) that a psychology disconnected from, though continuous with, another is not the same person. See his discussion of Methuselah437.
        7. It seems to me that both the biological view and the bodily continuity view would (theoretically, at least) allow for metamorphosis438 (provided, in the former case, that the metamorphosis is into another organism). There are, however, sortal439 objections to metamorphosis.
      • Body Criterion440
        1. The ‘body criterion’ of personal identity claims that we can determine that the human person persists through time just in case the same human body persists, irrespective of its mental properties.
        2. What it is that makes a body – in this case a human body – continue the same body over time?
        3. I need to do some further research in this area, but it is not important as – while considering ‘bodies’ as the bearers of human identity was a step in the right direction – it has been superseded by the treatment of human beings as living bodies, namely Organisms441, for which the Biological Criterion442 is more relevant.
        4. When I to continue research in this area, I would consider:-
          1. Bodies as “lumps of matter”.
          2. Mereological443 matters – such as mereological essentialism – as far as they apply to bodies.
        5. One of the troubling444 areas for animalism445 – the corpse problem – arises from the denial that I am identical to my “corpse to be”, and that when I die, a new item – my corpse446 – which is not identical to my pre-mortem body (which was an organism) because it has different persistence conditions447 – comes into existence. This sudden popping into existence seems counter-intuitive – but otherwise there seem to be two items co-located pre-mortem – the organism and the body. Eric Olson gets round the problem by denying the existence of “bodies” – but this isn’t very intuitive either.
    3. Brains448
      1. There is a view that we are449 really, most fundamentally, our brains. It seems to promise some good things for both the “psychological criterion450” and “bodily criterion451” camps, since the brain is indeed part of the body452, and, in the absence of a soul453, the source of all our psychological functions. However, we seem to be much more than our brains. After all, who would want to be a Brain in a Vat (BIV454)? According to Johnston (see "Johnston (Mark) - Human Beings"), BIVs are “maximally mutilated” human beings; which seems to be along the right lines. Note the important distinction between your surviving in a maximally mutilated state (as a brain) and you “really” being your brain.
      2. This is an issue Animalism455 has to contend with - whether a BIV is an animal. Paul Snowdon claims456 that no-one seems to think this, a view that Olson shares but on which he may be open to objection. He says that an animal with a prosthetic leg is a smaller animal with something non-animal attached. If this is admitted, don’t we end up with a sorites457 argument, that a BIV is a (very much) smaller animal; though not, I think, with any paradox?
      3. The big question is whether an animal’s brain is just another organ (like its liver) or whether it has some other status. That it is somehow special can be presupposed if we start conceptually with the brain as the core from which other parts are shaved off. Whether this is the right approach depends, I think, on what the brain does for the animal, and where the animal is on the phylogenetic tree. The brain is a much more important organ in some animals than others; in some lower animals it has no psychological functions and (maybe) its regulatory functions aren’t essential458.
      4. Why is Woody Allen’s expostulation (in Sleeper) that his brain “(is his) second favourite organ” amusing? Firstly, of course, because of the sexual innuendo and the ultimately strange prioritisation (since you can’t enjoy sexual excitement without a brain), but also, I think, because your brain isn’t an organ that you “have”. Without your brain, there’s no “you” at all, or at least this is a strong intuition.
      5. You can obviously (given even today’s technology), do without a liver, and it seems that on a life-support machine your body can do without its brain – where the brain is looked upon merely as a regulator. But the reference of “you459” is a bit slippery in these contexts. There is a sense in which you as an organism can do without a brain – on life support – but “you” as an essentially psychological being cannot. The animalists claim that you – being identical to an animal – have no essential psychological predicates; yet it is difficult to resist the intuition that there’s a reference of “you” that does have essential psychological predicates. This is to you as a person460 – but the big question is whether this person is a separate substance constituted by461 the human animal, or is just a way of describing the animal when possessed of the appropriate psychological predicates. Saying that you can’t do without your brain is just another way of saying that your psychological predicates are those most important to you (the animal); those without which the other predicates cannot be enjoyed.
      6. The issue fundamentally concerns the integrity of organisms462. It is said that a brain isn’t an organism; but does an organism have to be self-supporting (the main reason for denying the status of organisms to disembodied brains)? After all, we seem to be allowing that an organism on life support is correctly described as an organism. We’ll discuss this further in its place (ie. under organisms463).
      7. These issues are especially important when we consider various Thought Experiments464, in particular Brain Transplants465. Transplantation466 of all sorts seems to involve fusion467, with its logical problems for identity468 (not just for persons).
      • Brain Criterion469
        1. The question is whether the brain is the be-all and end-all of the matter of personal identity for human persons470.
        2. This view seems to be presupposed by those ethicists who espouse the (whole or part) brain death471 criterion for death472. There will be some overlap between this discussion and that below on brain death.
        3. It is acknowledged by most that – conceptually at least – there can be persons473 that are not humans (ie. not members of the species homo sapiens) – whether these persons be non-human animals, computers, God, angels, aliens or whatever. Non-animals presumably have no brains, though aliens presumably have a brain-analogue, so brains cannot be identity-criteria for personhood as such (indeed, we might argue that there are no criteria for persons as such474). But for animal-persons (human or otherwise), the brain seems to occupy a central place, both as the seat of psychology (in the absence of an immaterial soul475) and as the regulator of the body.
        4. So, the story would go, X is the same person as Y iff476 X has the same brain as Y.
        5. The trouble is – even if this claim is along the right lines – we can press matters further, and ask whether the whole brain is strictly necessary. If what impresses us is a brain-based psychological view477, when what we imagine is “really the minimal me” is the pair of psychology-bearing cerebral hemispheres, then we might imagine (as some philosophers have) a case of fission478, where – after equalising the hemispheres in psychological potency, we transplant479 one into another body lacking both hemispheres. Or, without needing anything so radical, we sever the corpus callosum in a commissurotomy480, thereby (on this view) creating two persons in one body.
        6. However, if we are animalists481,482 wondering what the “minimal animal” is, and it’s the command-and-control functions of the brain that impress us, then the paring-down process might483 be able to do without the cerebral hemispheres (or at least the psychology-bearing parts) altogether. So, brain-based views from different perspectives might come to different conclusions about the importance of the cerebral hemispheres – one view might make them essential, the other irrelevant to questions of identity (if not to “what matters484”). It is an empirical question whether the brain-stem can be divided, and hence whether a brain-based animalist approach is also subject to worries485 about fission.
        7. Anyway, the appropriateness of the Brain criterion of personal identity depends on what we are486– in particular whether we are (most fundamentally, or in the sense of numerical identity487, which is not the same thing) human animals or persons constituted by488 them (or various other things).
        8. Only if we believe that we are (identical to) brains489 will we adopt the brain criterion (though see Mark Johnston on Human Beings490).
      • Brain Death491
        1. Brain death is – loosely speaking, and rather uninformatively – just the death of the brain. More specifically, it is the death of the brain-stem. See "NHS - Brain Death" and "Wikipedia - Brain Death". Without a functioning brain-stem the human animal cannot survive without life-support, as the brain-stem regulates breathing and heartbeat (amongst much else); nor can the patient ever regain consciousness.
        2. Brain death is important in personal identity as it is often considered the point at which the animal – despite the best efforts of life-support systems – is “really” dead.
        3. There are different understandings of just when brain death occurs, and – indeed – on what it is. See, for example, the Wikipedia article above, which correctly distinguishes brain death (total failure of the brainstem) from a PVS492.
        4. On the Brain View493 of Personal Identity, the death of the brain494 – consistently defined – is obviously the death of the person495 – that is if persons, qua persons, are the sort of thing that can die, as death is a biological event. Maybe more strictly, on the Brain View, brain death would be our death.
        5. The same is probably true of Mark Johnston’s view that we are Human Beings496.
        6. Brain death is important legally and ethically as it is used to decide when it is right to withdraw life support. It is said that the human being is already dead when the brain is dead. I don’t really want to get drawn into this ethical argument. As previously noted, without the regulating power of the brain the organism is already dead, so – on the animalist497 view – we are therefore dead. We don’t therefore exist in this state, whereas in a PVS we do exist, but don’t have anything that matters498 to us.
        7. See "Kaufman (Sharon) - Neither person nor cadaver" and comments thereon for various other issues, which will be included here in due course.
      • Brains in Vats499
        1. There are three variants that I want to consider:-
          1. The traditional disembodied brain in a vat of nutrients, connected to the world by iut sensory and output motor devices.
          2. The Matrix-case, where the “vat” is a living human body, but where we have the same exchange of sensory and motor messages with a computer. I have a real body500, but not the one I think I have.
          3. The simulation case (which depends on Functionalism501 for any plausibility whatever), whereby I am living in a computer simulation. I am a computer program502.
        2. I’m not sure how well-motivated these supposed possibilities are for an explanation of what we are503. Within the context of my research project, I’ve no interest in the sceptical use of these TEs504, but there may be other uses.
        3. "Bostrom (Nick) - Are You Living in a Computer Simulation?" (2003) argues that it is highly probable that we are computer simulations (Case ‘c’ above). See also the altercation below:-
          → "Weatherson (Brian) - Are You a Sim?" (2003), and
          → "Bostrom (Nick) - The Simulation Argument: Reply to Weatherson" (2005).
        4. While the claim that we are computer programs is often made by futurologists, it doesn’t make sense to me.
          1. Computer programs are universals. I am a particular.
          2. What I am505 – in the sense intended here – is a particular implementation of a computer program “running” on a particular piece of hardware.
          3. So, I would be a particular partition of a particular piece of hardware, configured in an appropriate way.
        5. "Chalmers (David) - The Matrix as Metaphysics" (2005) seems to take the possibility of our being brains in vats (in the traditional Case ‘a’ sense) more seriously than might have been expected. However, I think his interest is purely in rebutting the sceptical conclusions of traditional epistemology. He thinks that if we were BIVs, we’d still know what we claim to know, because our words would have meanings appropriate to our envatted status.
          → See "Lloyd (Peter) - A Review of David Chalmers' essay 'The Matrix as Metaphysics'", 2008, for an attempted refutation.
      • Cerebra506
        1. The cerebrum is the centre for the higher cognitive capacities of the brain507, and hence of human and other animal508 psychology509.
        2. It is (or they are) one option for the choice of “what we are510” on the part of those who hold the Psychological View511 of personal identity.
        3. The two cerebral hemispheres are joined by the commissures, and commissurotomy512 is a favourite TE513, being an alleged case – suitably elaborated – of the fission514 of the person515; which again (allegedly) shows the non-identity of the human person516 and his animal517.
        4. There is some slackness in the literature where (whole) brain transplants518 and (double) cerebrum transplants are not distinguished, and where half-brain transplants (whatever these might be in practice) and single-cerebrum transplants are confused.
    4. Souls519
      1. I had thought that Souls had been consigned to the dustbin of history, with only die-hards like Richard Swinburne still believing in them, but Eric Olson, while he doesn’t believe in souls, has an entire Chapter of "Olson (Eric) - What are We? A Study of Personal Ontology" taken up with the possibility that this is what we are. So, I presume it must still be a live issue.
      2. I have work to do in this area: here I ought to discuss what souls are (supposed to be), and what problems the concept encounters, while under the head of the Soul Criterion520 I should focus on how souls (are supposed to) help with the problem of personal identity, and what problems they encounter in the attempt.
      3. Some of the ground is also covered under the head of Dualism521 and the Cartesian Ego522, which take the soul to be an immaterial mental substance. This has the drawback of the soul having a difficult relationship with the body it is supposed to control – how do the two substances interact? Additionally, there would seem to be a gap between immaterial substances and the findings of modern science, which has no place for them.
      4. There are other alternatives, stemming from Aristotle, where the soul is the Form of the body, which makes it what it is. But as such, it seems to be both mysterious and superfluous.
    5. Selves543
      1. The Self is important, as it’s the root of Baker’s FPP544, and the motivator for all psychological545 theories of PI, so understanding just what it is supposed to be is central to my concerns.
      2. The self is what the reflexive pronouns refer to, but this doesn’t get us far, though it does mean that we are546 Selves, though not fundamentally so. We human animals547 might persist even if we ceased to be selves.
      3. So, just what is a self?
      4. There’s a temptation to equate the Self with the Person548, but this is to waste a term, and it is likely that the two terms can come apart549.
      5. Nor is it just the personality550, though the reification of the personality is probably at the root of the (misguided) intuition551 that personal identity is broken if the individual suffers a too-radical change of personality.
      6. It’s not clear to me that SELF is a natural kind552 concept, so there may not be just one correct definition.
      7. But my use will equate a self to an individual with a perspective on the world which – if that individual were a person (as many selves are) – would equal a FPP.
      8. In "Seth (Anil Kumar) - The real problem", Anil Seth distinguishes five selves (or aspects of the self, considered as “a complex construction generated by the brain”):-
        1. The bodily self553, which is the experience of being a body and of having a particular body.
        2. The perspectival self554, which is the experience of perceiving the world from a particular first-person point of view.
        3. The volitional self555 involves experiences of intention and of agency – of urges to do this or that, and of being the causes of things that happen.
        4. The narrative self556 is where the ‘I’ comes in, as the experience of being a continuous and distinctive person over time, built from a rich set of autobiographical memories.
        5. And the social self557 is that aspect of self-experience that is refracted through the perceived minds of others, shaped by our unique social milieu.
      9. Not all individuals towards which we might adopt Daniel Dennett’s Intentional Stance are selves.
      10. While thermometers are excluded, I’m not sure whether having “a sense of self” is essential for being a self. So, creatures that pass the Mirror Test558 will be Selves, though might not all be persons, but others – human infants, gorillas, elephants, dogs – might be selves even where they fail the test.
      • I559
        1. What is the reference of “I”, and does this linguistic usage and convention have any bearing on the metaphysics of Personal Identity in general or Post Mortem Survival560 in particular.
        2. Naturally, I doubt that it does, but there are arguments to the contrary.
        3. This topic is not to be confused with discussion of Selves561 or Cartesian Egos562 and maybe other similar topics.
        4. It is also not really related to the question What We Are563, though the reference of “I” will be to that being.
        5. "Glover (Jonathan) - I: Philosophy and Psychology of Personal Identity" and "Button (Tim) - Wittgenstein on Solipsism in the 1930s: Private Pains, Private Languages, and Two Uses of ‘I’" would be good places to start my research.
        6. Additionally, see "Zimmerman (Dean) - Personal Identity and the Survival of Death", Section 4, and another important source is David Kaplan, though I don’t seem to have many relevant papers yet.
        1. Cartesian Ego564
          1. That we are Cartesian Egos has been a popular suggestion in answer to the question of what we are565. It is presumably what those who first supported the Psychological View566 of personal identity had in mind, but may not be what the majority of philosophers these days – most of whom continue to hold some form of the PV – accept.
          2. Cartesian Egos are robustly criticised these days, but I’ve not been able to find any paper on JSTOR that has the term in its title. Maybe the papers I’ve read have defined it, but I’ve forgotten the precise definition. Anyway, I assume that the Ego is the “I567” that Descartes thought that introspection revealed. Presumably it is also supposed to be an immaterial substance, which is what Descartes thought he – a “thinking thing” – was.
          3. There is some overlap with Lynne Rudder Baker’s focus on a First-Person perspective568. Just what is it that’s supposed to look out on the world if not a Cartesian Ego? But Baker is not a dualist569 (at least not in the Cartesian570 sense) – she thinks of us as belonging to the PERSON571 substantial572 kind573, presently constituted by574 a human body575. The person does not have separate existence to the human body, in the way in which the Cartesian Ego does – which is (allegedly) separable from the body (and capable of living in disembodied576 form). I think for Baker we are essentially embodied – just not by577 the same body.
          4. With respect to the Cartesian Ego, we need to consider just how psychologically unified human persons578 are, and whether or not the mind is formally modular. In particular, is there massive modularity, or is there an executive? And is it the executive that is the Cartesian Ego?
          5. In this connection, I must consider psychological accounts of modularity579 of mind from the identity perspective, rather than straying too far into philosophy of mind and psychology. This will feature mainly in discussion of objections to Animalism580.
      • Narrative Identity581
        1. Narrative identity isn’t really an account of numerical identity582, but is dependent on it. It is analogous to the Psychological View583 but is closer to what most non-philosophers usually mean by a person’s “identity”. Saying someone is “no longer the same person” in this context implies such a change in personality584 that their life no longer fits into a single narrative.
        2. To quote from "Shoemaker (David) - Personal Identity and Ethics", section 2.3:-
          • what makes some feature mine may actually be making reference to a non-numerical type of identity, a type of identity we are thinking of when addressing the familiar question of an identity crisis: “Who am I really?” This is the question of identity as proper attributability, as providing an account of one's true self and the various attributes genuinely belonging to it.
          • the Narrative Criterion of Personal Identity: what makes an action, experience, or psychological characteristic properly attributable to some person (and thus a proper part of his or her true identity) is its correct incorporation into the self-told story of his or her life. … Narrative identity is thus really about a kind of psychological unity585, but not just an artless or random unity.
          • for that subject of experiences to be a person, a genuine moral agent, those experiences must be actively unified, must be gathered together into the life of one narrative ego by virtue of a story the subject tells that weaves them together, giving them a kind of coherence and intelligibility they wouldn't otherwise have had. This is how the various experiences and events come to have any real meaning at all — rather than being merely isolated events — by being part of a larger story that relates them to one another within the context of one life
          • What explains my special sort of concern for myself is that I'm in fact an extended narrative ego — not some time-slice concerned about the well-being of some future time-slice — and I'm constantly extending that narrative into the future, so my concern is global, a concern for the whole self I'm creating via this story, the whole self whose various parts are mine.
          • what makes some past action mine (for which I'm eligible for praise or blame) is that it flowed from my central values, beliefs, and experiences, that there's a coherent story I may tell uniting it to the other elements of my life.
        3. However, Shoemaker sees a problem:-
          • What matters to us with respect to all of our practical concerns is that we ourselves continue to exist: it's a necessary presupposition of my rational anticipation, self-concern, possibilities for compensation, and so on that I myself persist, but this is an issue of numerical identity586. Another way to put this is that one can't be a person, on the narrative view, unless one gathers up the various experiences one has as a subject of experiences into a coherent narrative, but then the identity of that subject of experiences must be preserved across time for its experiences to be so gathered up.
        4. I noticed in "Jaarsma (Ada) - Choose your own birth" that Simone de Beauvoir – in Pyrrhus and Cineas – states that “I am not a thing, but a project”. This claim may connect Narrative Identity to Existentialism. De Beauvoir’s contrast is rather a stark claim. But it highlights the difference between those who think of persons587 as concrete particulars of whatever form and those who think of them as a process588 of some sort.
        5. In brief, Narrative identity addresses questions of ‘who we really are’ (which is distinct from the generic question What Are We589) and gives an account of the individual’s ‘true self’ and which characteristics truly belong to it. It provides a self-told story with a kind of psychological unity590, coherence and intelligibility. To be a person591 and a true moral agent592 (it is said), one’s experiences and life events need to be gathered together into the life593 of one’s narrative ego. This gives the various experiences and events their meaning by putting them in context. This helps explain my special self-concern, as being for the whole space-time worm594 rather than one time-slice being concerned for a future time slice (as in exdurantism595, I believe). So, what makes an action truly mine – and one for which I’m morally accountable – is that it flows from my core values in such a coherent narrative.
        6. There are clearly objections to all this. Such a narrative – to be a single narrative – needs to be the experience of a single persisting entity, and so is dependent on numerical identity. It also seems to be a rather too convenient way of getting out of responsibility for our ‘out of character’ actions. In any case, our ‘true character’ is revealed by – and develops through – our actions.
        7. If narrative identity depends on numerical identity596, then it is just as subject to fission problems597, as is no-doubt revealed in cases of MPD598.
        1. Race599
          1. The topic of Race has a rather tenuous connection to my Thesis as a sub-topic of Narrative Identity600.
          2. However, given how important racial identity is to some people (maybe to all, but tacitly so for the dominant race in a society601), I ought at least to touch on the subject.
          3. For some people, their race affiliation is key to who they see themselves to be and where they belong. For racists, race is definitive of a person’s status and value.
          4. There seems to be some disagreement about whether “races” actually exist. See Aeon – Hochman – Is ‘race’ modern?602.
          5. Certainly, genetic differences – while obvious – are both overplayed (by racists) and underplayed (by their opponents). Racial ‘problems’ are now largely social, especially in the USA.
          6. As this is such a sensitive subject, I don’t intend to say any more for now.
      • Self-Consciousness603
        1. Self-consciousness is more than just phenomenal consciousness604 (which may be a watershed in itself with moral consequences greater than are generally accepted) but the consciousness of oneself as a self605 (as Locke606 noted).
        2. But we need also consider the view that this “watcher” is an illusion, a falsely-assumed Cartesian Ego607 whose existence is undermined by neuroscience, the modularity of mind, and such-like.
        3. I was alerted to a quotation from "Updike (John) - Self-Consciousness":-
            “Not only are selves conditional but they die. Each day, we wake slightly altered, and the person we were yesterday is dead. So why, one could say, be afraid of death, when death comes all the time? ”
        4. While superficially profound, I think this idea is muddled in several respects:-
          1. Death608 is a biological event that – at least in the ordinary case – can happen to an organism only once.
          2. So, whatever Selves609 are, they don’t die every night. Follow the links above for further discussion.
          3. We do indeed “wake slightly altered”; indeed, we alter slightly whenever we encounter an event that has an impact on us.
          4. I’m not sure what Updike means by our “selves” being “conditional”, but I can well believe it.
          5. Updike seems to subscribe to some “strict and philosophical610” view of identity, whereby nothing survives change. This is not a useful understanding.
          6. Any comfort we might get from such thoughts concerning our inevitable deaths is entirely spurious.
        1. Consciousness611
          1. Conscious mental phenomena are central to any account of what persons612 are. However, we must note that in the philosophy of personal identity, a saltation is usually diagnosed between the phenomenal consciousness of the higher (and probably many lower) animals613, and self consciousness614 (ie. awareness of self615), usually assumed616 to be the preserve of human beings617 only.
          2. Lynne Rudder Baker alleges an ontological change (an ontological novelty) when beings with a First Person Perspective618 come on the scene. I think first-person perspective619 is the same as a consciousness of self, though I suspect that if the non-human great apes are found to have the latter, she would allege the ontological novelty occurs with the arrival of the former, taken to be a more profound awareness.
          3. Personally, I think the real ontological novelty arises with the emergence of phenomenally conscious beings, and that consciousness of self is a culturally-acquired phenomenon (though – despite the Buddhist attempt to eradicate it – a universal one). But even so, the ontological novelty is that of the beings which have this property, not the property itself.
        2. Functionalism620
          1. Functionalism is a thesis in the philosophy of mind – originally in contrast to the then alternatives of behaviorism and the identity theory – to the effect that “mental states are identified by what they do rather than by what they are made of” (see "Polger (Thomas) - Functionalism").
          2. However, it has been co-opted by Sydney Shoemaker to support the cause of the Psychological View621 of PID, disputed by Eric Olson. See:-
            → "Shoemaker (Sydney) - Personal Identity: a Materialist Account"
            → "Shoemaker (Sydney) - Self and Substance"
            → "Olson (Eric) - What Does Functionalism Tell Us About Personal Identity"
            → "Shoemaker (Sydney) - Functionalism and Personal Identity - a Reply"
          3. Shoemaker is a materialist622 as far as the mind-body problem is concerned (at least in contrast with Swinburne’s soul view). But, this does not carry over into PID, either as the physical623 view or animalism624.
          4. I am highly suspicious of Functionalism as it applies to consciousness625, though it is a difficult question. If consciousness should turn out to be a quantum phenomenon based in the brain, then Functionalism would be proved false empirically. People have always been suspicious of a network of baked-bean tins wired up isomorphically to neurons being conscious (but then this would be too simplistic a model).
          5. I think that according phenomenal consciousness to other mammals is best motivated by their similar neural structures, even though the fact that they look and behave as though they are conscious would be sufficient for a prudential attribution. This is because we could (as a thought experiment626, at least) build robots that behaved like conscious beings yet we knew (from their architecture) that they weren’t.
          6. This case is put under pressure by very complex computers or by aliens who might have very different physiology.
          7. Any possibility of ‘uploading627’ a person to a computer depends on Functionalism for any plausibility whatever.
        3. Supervenience628
          1. To quote from "McLaughlin (Brian) & Bennett (Karen) - Supervenience", “A set of properties A supervenes upon another set B just in case no two things can differ with respect to A-properties without also differing with respect to their B-properties. In slogan form, “there cannot be an A-difference without a B-difference”.
          2. So – the classic example is of the mind supervening on the brain (mental properties on physical properties of the brain) – there can be no change of mental properties without a corresponding change of brain-states.
          3. Humean supervenience629: "is the assumption that all truths about our world will supervene on the class of physical truths in the following sense: There are no truths in any compartment of our world that cannot be accounted for in terms of differences and similarities among those properties and external space-time relations that are fundamental to our world according to physical science."
          4. Apart as a rebuttal of dualism630, I’m interested in Supervenience because it is related to questions of Constitution631 and multiple-occupancy632. It is also claimed as an objection633 to Eric Olson’s Thinking Animal Argument634.
        4. Zombies635
          1. In analytic philosophy, ‘Zombie’ is a term of art for the supposed possibility that individuals might exist with exactly the same
            → physical structure and
            → behaviour
            as human persons, but without phenomenal consciousness – with “no-one at home”, in other words.
          2. It is addressed in "Kripke (Saul) - Naming and Necessity: Lecture III", and is a bug-bear of David Papineau – eg. in the latter part of "Papineau (David) - The Importance of Philosophical Intuition".
          3. The most important claim is the first – that beings of the same physical structure as ourselves might lack consciousness. Accepting it seems to beg the question against materialism636. If materialism637 is true, then zombies are impossible – on the assumption that we are conscious638.
          4. The second claim – that androids (say) might behave like us but lack consciousness is readily believed by all those not in thrall to a strong version of Strong AI and the Turing Test. It is true of ChatGPT.
          5. This doesn’t mean that “zombies” don’t have minds, or that they blunder about as in the horror movies – they would appear completely like us. It’s just that there’s nothing it is like to be a zombie. Or so it is supposed. It may be that this is in fact impossible, though only ‘obviously’ so in the case of human philosophical zombies.
          6. What has all this got to do with Personal Identity? Some immediate thoughts:-
            1. There would seem to be no impact on animalism639, which discounts the importance of the mental for our persistence.
            2. The constitution view640 might equally be unperturbed. This depends on whether zombies have a FPP641. As noted, they have a mind, and presumably intentionality – itself a window on the world. But I suspect there needs to be ‘something it’s like to have’ a FPP642.
            3. Consciousness is often said to be something essential to being a person643.
    6. Patterns in Information Space644
      1. Andy Clark is particularly keen on this sort of idea, claiming that we are645 “patterns in information space”.
      2. Variants on this theme that immediately come to mind include:-
        1. The transhumanists646 seem to assume that we are information, in that some of them imagine and hope that we647 will one day be able to be uploaded648 to a computer and dwell therein.
        2. The primary variants of Teletransportation649 assume that we can be converted to information, beamed up to our destination and reconstituted as the very same individual.
        3. Brain State Transfers650 are another variant on this theme.
      3. I don’t go along with any of this, adopting the animalist651 approach that we are essentially organisms652 essentially embodied in the one body653 we will ever have.
      4. I should remark that Richard Dawkins claims that Life654 is information (as distinct from “protoplasm” in that DNA is information, and living organisms exist to perpetuate their genes, as he says in "Dawkins (Richard) - The Blind Watchmaker" and elsewhere). While this is an important idea, and contains much truth, I don’t think it has the right emphasis, though it’s all a bit “chicken and egg”.
    7. Bundle Theories655
      1. If "Olson (Eric) - What Are We? Bundles" is anything to go by, Bundle theories are still a live option.
      2. My initial intuition656 is that they are – if I understand them correctly – too absurd to demand much attention, in that they put the cart before the horse. Rather than attend to substances657 as the bearers of properties658 that may qualify their bearers as persons659, Bundle theories focus on collections of perceptions and thoughts to constitute660 minds661 and sensations to constitute bodies662 – or variations on such themes.
      3. The classic statement is that of Hume663, though there’s some doubt as to whether Hume actually used the term.
      • Hume664
        1. Hume’s “Bundle Theory” of personal identity is – as even Hume seemed to agree – hopeless, and I have no intention of becoming a Hume scholar with the intention of extracting some goodness out of it.
        2. Nor, for that matter, do I intend to weigh in to deciding whether Hume did or not use that expression for his theory.
    8. Hybrid Theories665
      1. In the philosophy of personal identity, I’d like the term “Hybrid Theory” to apply to (to put things somewhat pejoratively) “cake and eat it theories” where you’re faced with an awkward choice between two inconsistent theories, but want – in certain circumstances – to choose the best parts of each. In other words, we might in general want to follow one theory, but in certain awkward cases, be willing – or even strongly inclined – to follow the other.
      2. My own temptation is to espouse animalism666 but also give a high regard to the First Person Perspective667 so that – if this FPP668 is maintained throughout some adventure – it trumps whatever animalism has to say. This applies particularly to Brain Transplants669, though there are ways out of this conundrum other than adopting a Hybrid theory or simply denying the “brain transplant intuition”.
      3. "Keles (Serap) - Personal identity and persistence over time : the hybrid view with regard to hylomorphism", a PhD Thesis, looks important in attempting to bring together Animalism670 and the Constitution View671 as a hybrid theory in the context of Hylomorphism672.
      4. "Ferner (Adam) - Metaphysics and biology: a critique of David Wiggins’ account of personal identity", another PhD Thesis, contains the claim that David Wiggins held to a Hybrid theory with respect to personal identity. To quote from p. 91:-
          Yet while Wiggins takes these features as indicators that ‘person’ is akin to a natural kind word, he is cautious of giving it the full status of such terms, like rabbit, ivy, butterfly, and (putatively) human being. Rather, he suggests that we see ‘person’ as something like a qualification of a natural kind determinable, a ‘hybrid concept’ with a natural kind element and a systemic element as well (alike to how ‘vegetable’ collects together a group of savoury, edible plant kinds).
      5. The only other material I have that propose or discuss a Hybrid Theory of Personal Identity are:-
        → "Snowdon (Paul) - Persons, Animals, and Bodies" (Section 7),
        → "Hodson (Sommer) - A Hybrid View of Personal Identity", a PhD Thesis, and
        → "Kotak (Aakash) - The Hybrid Theory of Personal Identity", an MPhil Thesis.
    9. Nihilism673
      1. Otherwise known as Eliminitivism, Nihilism is the view that there are no persons or – more alarmingly – that we don’t exist.
      2. Whether what is eliminated is the same in all cases must await detailed examination.
        1. Peter Unger – at least at one time674 – argued (rather improbably) that:-
        2. Eric Olson:
        3. Peter Van Inwagen: thinks that all that exists are organisms and simples. See:-
          → "Van Inwagen (Peter) - Extreme Answers to the Special Composition Question: Nihilism and Universalism" (1990)
          This is no threat to the existence of persons, of course.
        4. "Merricks (Trenton) - Objects and Persons" (2001); in particular:-
          → "Merricks (Trenton) - Surviving Eliminativism", and
          → "Merricks (Trenton) - Considerations in Favour of Eliminating Us?"
          Merricks thinks that we – and other organisms – exist, but that statues don’t. Again, this is no threat to the existence of persons.
      3. One reason for considering this topic is that lots of the arguments – sorites-style675, or “too many occupants” – occur throughout the topic of personal identity. If they are unsound here, they may be so elsewhere.
      4. In particular, it’ll be interesting to compare Olson’s argument that he has no hands with his “thinking animal676” argument. He seems committed to both.
      • Buddhism677
        1. Buddhist teachings are relevant in at least two ways to the philosophy of personal identity:-
          1. The rejection of the importance of the Self678. There are some connections to Parfit’s679 ideas.
          2. The insistence on Reincarnation680.
        2. The Buddhist claim is that the focus on the Self, together with attachments to anything whatever, is the cause of all the world's ills. No doubt there's something in this - but it's illicit or inordinate attachments that are the problem, not attachments as such. Attachments are what gives life meaning, and its selfishness, not selves, that is the problem. Anyway, some philosophers think it would be a "good thing" if the boundaries between one self and another were broken down so that we cared less about who was benefitted from our actions, just that our actions were beneficial - so we wouldn't care whether it was ourselves, or our families or friends, or someone unknown to us who benefitted, just that someone did. Despite the potential benefit to the world’s poor, this strikes me as:-
          1. Overly idealistic and
          2. Ignoring our proper responsibilities (ie. we have some greater responsibility - though not an exclusive one - for those close to us, because they are "our job" to look after).
        3. Those philosophers who take a "psychological view681" of our persistence conditions682 – that we're psychological beings whose degree of connectedness to our future selves is exclusively based on psychological factors – some of whom think that we are somehow portable from one body to another – can make some sense of reincarnation683. Those who are thoroughgoing materialists684 (like me) can't. I’m sure the Dalai Lama685 is a very nice man, but his position and authority depends on him being a reincarnation686 of someone else, which isn’t likely to be true.
        4. However, I think this may be a misrepresentation, for if Buddhists take the soul view687 of our identity, then the very same soul may be reincarnated688 – ie. given a new body. This is despite the possessor of that soul – in a previous life – being a different human being689 (or, indeed, not a human being at all).
        5. Where Buddhism differs from Hinduism with regard to the benefits of reincarnation is that for Buddhists reincarnation is never a benefit in itself, because the idea is to achieve nirvana by escaping the cycle of rebirth. For Hindus, the benefit depends on Karma – if it is good, then you go up the ladder, else down.

Concluding Remarks
  1. In our next Chapter, we consider just what a Person is.
Chapter 3: What is a Person?690
Abstract
Chapter Introduction
  1. Firstly, we need to consider just what a Person691 is. In particular, is Personhood a Substance concept (assuming a Substance692 rather than Process693 metaphysics) or is it a Property694 of a Substance?
  2. Then we need to consider what Properties qualify an individual to be a Person. Additionally, when does the individual become a person, and having become a person, can that individual later cease to be a person?

Main Text
  1. Introduction
    1. The main philosophical argument about Persons is whether PERSON is a substance695-concept in its own right, or whether it is parasitic on other substance-concept(s).
    2. My own view is that Human Persons are phase sortals696 of human animals, but other philosophers have more robust views of persons and think of them as substances in their own right.
    3. Famously, Locke697 held this view, and Lynne Rudder Baker698 was a contemporary exponent – her view being that human persons are constituted by699, but are not identical to, human animals700.
    4. In this thesis, I’m only concerned with human persons, and – like most philosophers – allow that there can be non-human persons701 (God, gods, angels, aliens, robots, Great Apes, etc.)
    5. All this is predicated on deciding just what PERSONS are, which in turn depends somewhat on whether we take PERSON to be a natural kind702 concept, or something that is socially constructed and so not something the correct definition of which we can discover.
    6. I defer discussion of the important topic of the First-Person Perspective703 until Chapter 7704.
  2. Qualities of Personhood
    1. Person705
      1. We must first consider whether the debate on personal identity has been hijacked by a term (whose meaning has changed over time) that can now be dispensed with. Wiggins claims (in "Wiggins (David) - The Person as Object of Science, as Subject of Experience, and as Locus of Value", I think) that the Greeks had no term for “person”. Have we always secretly been talking about human animal identity (probably referring to human beings706 rather than human animals) when we thought we were talking about something separate, namely persons? See "Ferner (Adam) - Metaphysics and biology: a critique of David Wiggins’ account of personal identity" for a detailed exegesis of Wiggins’s views.
      2. See "Trendelenberg (Adolf) - A Contribution to the History of the Word Person" for the usage of the term ‘person’ prior to the 20th century.
      3. For a slightly less ancient treatment, see also:-
        → "Mauss (Marcel) - A Category of the Human Mind: the Notion of Person; the Notion of Self"
        → "Allen (N.J.) - The Category of the Person: a Reading of Mauss’s Last Essay"
        → "Collins (Steven) - Categories, Concepts or Predicaments? Remarks on Mauss’s use of Philosophical Terminology"
      4. For a more contemporary historical discussion, see "Rorty (Amélie Oksenberg) - Persons and Personae".
      5. We need to start with some conceptual707 analysis, though this may lead to somewhat arbitrary (ie. merely semantic708 or culture-relative) conclusions if PERSON isn’t a natural kind709 concept.
      6. I accept Locke710’s conceptual distinction between Human Beings711 (“Men”), Persons and Substances712. I accept Locke’s assertion that the rational parrot would be a person, but not a man – the latter essentially involving particular physical characteristics, the former specific mental characteristics.
      7. Can any purely mentalistic definition of the concept PERSON, such as Locke’s definition of a person as
          “a thinking intelligent being, that has reason and reflection, and can consider itself, the same thinking thing, in different times and places” ("Locke (John) - Of Identity and Diversity" - Essay II.27.2)
        be correct? I suspect not, because of the corporeal aspects we take as being essential to our self-image.
      8. But, when we think of ourselves in this corporeal way, is this qua ANIMAL or qua PERSON. But then, this “qua-ing” can lead to relative identity713, and shows how difficult it is to maintain the strict logic of identity714 in these discussions.
      9. Some further thoughts:-
        • We must not ignore potential differences between the Person, the Self715 and the Individual716.
        • I doubt the truth of the contention that one’s Self is the sum of one’s projects, one’s individual “identity717”.
        • We must also note the potential for degrees of personhood718.
        • Are persons essentially sentient? Or rational? And is rationality, like the mental generally, overstated by philosophers whose favourite habitat it is?
        • What about temporal gaps719 in sentience & rationality in the life of an individual – does the person pop in and out of existence?
        • What about legal persons: not companies, but the comatose, who still have estates (but then so do the deceased720)?
        • How important is “person”, as against “sentient being721” in my research concerns? The Cartesians denied sentience to animals722 and until recently there has been a down-playing of the capacities of animals, particularly their emotional capacities. Consequently, the persistence criteria723 for sentient non-humans may not have been given the focus they ought. I suspect that many of the thought experiments724 work just as well if we drop some of the more onerous requirements of personhood in such contexts. Some of the thought experiments play on the thought of “being tortured tomorrow725”. While animals may not have the concept TOMORROW, I presume the higher animals have some capacity for anticipating future goods or ills about to befall them – that’s how dog-training works726. I wonder whether my research concerns should be about all beings that care about the future, whether or not they have a clear concept of it as their future.
      10. To aid in investigating just what persons are I will start with Dennett’s six criteria of personhood (see "Dennett (Daniel) - Conditions of Personhood", on which I have written an essay727):-
        1. Rationality,
        2. Intentionality – “predicated of”
        3. Intentionality – “adopted towards”
        4. Reciprocation of the personal stance,
        5. Verbal communication and
        6. Consciousness
      11. The properties usually taken as being essential for persons include several on which I have individual Notes.
        1. A person has a First Person Perspective728, the person’s window on the world, and reflexively on itself.
        2. Persons have Free Will729, at least to the degree that Free Will is possible in the world in which we live.
        3. A Person is an Intelligent730 being (though not all such qualify as Persons).
        4. A person has Language (or at least a Language of Thought731).
        5. Finally, there are – for human persons at any rate (and presumably for the Persons supposedly forming the Holy Trinity) – Social732 aspects to personhood.
      12. We need to distinguish Persons from their Personalities733. When people say that so-and-so is no longer the same person, they usually mean that the individual has had a radical change of personality.
      13. Having decided what a Person is, we need to decide what kind of being is a Person. We need to canvass the usual list of candidates other than ourselves – Human Persons734 – which are covered in my Note on Non-Human Persons735.
      14. It is often assumed that being a Person is an all or nothing affair, with persons having infinite moral value, and non-Persons having negligible value: is – or should – this be so? Can there be Degrees of Personhood736? My Note on Wantons737 is also relevant in this context.
      15. Given the variety of potential Persons, we might doubt whether there are persistence criteria for Persons as such. This gives rise to the choice between Reductionists738, who hold that the persistence of Persons is governed by those of the sort of entities that constitute them, and holders of the Simple View739, which denies this.
      16. We also need to ask how well integrated Persons are, as discussed in my Note on The Unity of the Person740. How do we Count Persons741? Is there a 1-1 match with the entities that constitute them? Can there be such entities as Personites742?
      17. Finally, do the various theories of Personhood Take Persons Seriously743, or at least sufficiently so?
    2. Free Will744
      1. Free-will may prove essential to our concept of a Person745, as is alleged in "Frankfurt (Harry) - Freedom of the Will and the Concept of a Person".
      2. This idea stems initially from Locke’s view that personhood is a forensic property746 of the individual that allows for praise or blame. Without free will, praise or blame is said to be out of place.
      3. Dennett’s views in
        → "Dennett (Daniel) - Freedom Evolves" and
        → "Dennett (Daniel) - Elbow Room - The Varieties of Free Will Worth Wanting"
        will be of interest, following on from
        → "Dennett (Daniel) - Conditions of Personhood".
      4. See also the Aeon discussion in "Dennett (Daniel) & Caruso (Gregg D.) - Just deserts".
      5. Gregg D. Caruso has written extensively in this area claiming – contra Dennett – that none of us has free will because all we do is down to luck: either constitutive luck – from our genes and initial family situation – or present luck – from our environment. Consequently, Caruso claims that – rather than blame – criminals need therapy747.
      6. Free will also features in discussions of backward Time Travel748.
      7. I’ve covered the topic of future contingents in my essay on Aristotle’s Sea Battle749. I’ve not repeated the associated literature here.
    3. Intelligence750
      1. Intelligence is a very wide-ranging term, and there’s a tendency to focus on what are really fairly minor differences in human aptitudes; namely, in the discussion of IQ.
      2. The intention of this Note is to consider intelligence as a pre-requisite for personhood751.
      3. Clearly, many non-persons (including the higher non-human animals) are intelligent to some degree or other, so is there a qualifying level – or type – of intelligence needed for personhood?
      4. Could intelligence tie in with the possibility of degrees of personhood752? This would seem to be the case if the Great Apes and other appropriate higher mammals are included in the category of Non-human Persons753.
      5. Also, there’s the issue of Superintelligence – that of (future, putative) machines that exceed humans in intelligence, whatever that means. This is “The Singularity”. Will they also be Non-human Persons754, of a superior kind? That is, is intelligence sufficient for this accolade of personhood? I assume not and that sentience is needed as well as sapience.
    4. Language of Thought755
      1. According to "Dennett (Daniel) - Conditions of Personhood", Linguistic competence is one of the six essential features of personhood. It seems there are two reasons for this:-
        1. One is communication, as the formation of and participation in societies are essential to the flourishing of persons756.
        2. The other is that the sort of self-reflection needed for personhood allegedly requires language.
      2. In response:-
        1. I believe there can be non-verbal communication between higher animals – especially those that are candidates for personhood (maybe of reduced degree757) – indeed, this must be the case for social beings.
        2. Also, cogitation doesn’t require the ability to verbalise if there’s such a thing as a language of Thought. Our conscious thoughts do seem to involve internalised spoken language, but maybe our unconscious ones don’t.
      3. So, the relevance of Jerry Fodor’s Language of Thought (LOT) hypothesis within the sphere of personal identity arises because of the alleged essentiality of language for personhood. As such, all non-human animals758 would be ruled out because even if certain Great Apes can be taught sign-language, this is not natural to them in the way language is to human beings.
      4. It is also often alleged (eg. by Donald Davidson) that animals cannot even think in the absence of language, because thinking requires concepts759, and concepts are only expressed in language.
      5. These (to me) unwanted conclusions might disappear if all animals whose minds appear to have intensional states should have a language of thought.
      6. I don’t know whether Fodor cares about animals in this context, or whether his theory was designed strictly with human beings760 in mind.
      7. I like the idea that a LOT – which initially only helps an individual – might explain how spoken language arose amongst human beings – given that a spoken language requires a pair of speakers before it becomes useful (even if grunts and other vocalisations don’t). If a language of thought spilled out into vocalisation, even though individual vocalisations might be initially mutually-unintelligible, a conventional speech (constrained only by universal grammar) might naturally arise with the co-operative behaviour germane to social animals.
      8. See "Rescorla (Michael) - The Language of Thought Hypothesis" for an overview.
    5. Social761
      1. It seems that the social aspects of personhood are deemed to be the most important – indeed the defining – aspects of what it is to be a person by some contemporary philosophers.
      2. I have in mind Anne Sophie Meincke in this regard, but no doubt there are others.
      3. I have my doubts as it seems to encourage the widening of the net of personhood to include social animals – including ants and bees – that are clearly not persons unless personhood loses any appropriate sense of being a forensic property762, or else the moral community is expanded to a degree that makes its current norms unworkable.
      4. Such suggestions need to be compared with other assessments of what it is to be a person763, as in my discussion of Daniel Dennett – Conditions of Personhood764. The social aspect is assumed rather than explicitly mentioned.
      5. There are also issues about our “identities” – in the sense of Narrative Identities765 or our sexual identities – being defined or constrained by the society in which we live.
  3. Personality766
    1. “She’s not the same person”, means she’s undergone a change of personality. It does not mean that she’s a numerically-different individual. Such is agreed by all but the most extreme (or maybe most consistent) adherents of the psychological view767 of personal identity.
    2. What are personalities? Are personalities a loose collection of properties and predispositions? Do personalities have persistence conditions, so that saying that someone has or has not changed their personality even makes sense?
    3. Consider an analogy with weight. It makes sense to ask whether individual x has the same weight at time t1 as at t2. That makes sense because weight is a well-defined property. Of course, for “weight” to be a useful practical concept in this context, there is a tolerance; differences of a few grams don’t count, though those of a few kilograms do. However, “personality” is a much less well-defined concept768, and similar769 ones may count as the same.
    4. We do allow for our personalities to “evolve” as we mature, so – presumably – we think of them as having persistence conditions of some sort. Too radical a change is shocking to us, leading to the opening quote above.
    5. I have a separate discussion later on of Multiple Personality Disorder770, some interpretations of which claim that multiple persons inhabit the same human being (as is reflected by the new term “Dissociative Identity Disorder”, though some don’t treat it as a “disorder” at all) while others – more traditionally – think of it as a fragmented personality.
  4. Who is a Person?
    1. Human Persons771
      1. Human persons are the only persons we have direct knowledge of – in the sense of both knowing that they are (or can be) persons772, and what it is like to be such a person.
      2. It is probably only a matter of semantics whether human beings773 are persons throughout their lives. That is, if the term is only applied to individuals with the relevant properties at the time of application, or whether it applies to ‘once and future’ persons, or to all who belong to the species homo sapiens774.
      3. As Person775 is a forensic property776, this matter of semantics has ethical and legal consequences. I think these questions get very muddled.
      4. There’s a question whether Neanderthals and other extinct hominins ought to be categorised as human or non-human persons777, that is if they can be known to have been persons at all (rather likely in the case of the Neanderthals).
    2. Non-Human Persons778
      1. Amongst philosophers, if not amongst the general populace, it is usually taken for granted that there can be persons who are not human beings779. The usual candidates are:-
        1. Extinct Hominids, where these are not categorised as “human” (see the Note on Homo Sapiens780 for a discussion of Neanderthals; there’s a question whether Neanderthals ought to be categorised as human persons781or non-human persons).
        2. The higher Non-human Animals782, especially the Great Apes,
        3. Aliens,
        4. Angels,
        5. God,
        6. gods,
        7. Androids783 (or appropriately-configured Robots),
        8. Cyborgs784, at least those with silicon785 (or other inorganic) brains786 (those with human brains will, naturally, be human persons787).
        9. Computers788 – or computer programs – or the combination thereof – of appropriate structure and complexity.
      2. See also my discussions of Transhumanism789, and Uploading790 for further consideration of various of the above.
      3. Angels and aliens are discussed in "Wiggins (David) - Reply to Snowdon (Persons and Personal Identity)" and the claim is that insofar as we can conceptualise them, they are animals791. Wiggins also discusses robot-persons792. If, in order to satisfy the conditions of personhood, these end up as molecule-by-molecule clones793 of animals, these are animals also. So – with the possible exception of God and gods – Wiggins doesn’t think there are counter-examples to the supposition that all persons are animals.
      4. The question is whether these candidates can be persons, and what – if they can – this fact tells us about what persons are.
    3. Degrees of Personhood794
      1. That personhood may come in degrees – rather than being “all or nothing” – is rather a dangerous thought, at least if applied to human persons795.
      2. However, if we are inclined to extend the boundaries of personhood to include some higher non-human animals796 (or – in the future – artificial intelligences797) – but don’t want them to be on a par with human beings, for instance in moral accountability – we might have to allow the thought “person – 2nd class”, or something like that.
      3. It seems clear that the qualities that qualify an individual to be a person798, come in degrees.
      4. The key point at issue is probably whether personhood is an honorific (a property of substances) rather than a substance799-term itself. If it is not a substance-term, as I believe it is not, then we have the option to provide – say – legal protection to the underlying substance – say human animal800 or human being801, and then denying the epithet “person” to some human beings need not have the genocidal overtones that are usually suspected whenever such a thought is expressed. But, it still might be better to avoid refusing the term altogether.
      5. So, maybe some persons are “more” persons than others and persons do indeed come in degrees. But maybe they are just better persons according to some criteria – whether ethical or metaphysical – and these criteria need to be sharply distinguished.
      6. For instance Frankfurt – in "Frankfurt (Harry) - Freedom of the Will and the Concept of a Person" – claimed that wantons802 are not persons, but maybe we should say that (from an ethical perspective) they are poor exemplars of the concept PERSON.
      7. We can think of an analogy with animals. Some animals (eg. human beings – or, lest we be considered a special case - chimpanzees) are, according to many evaluative criteria, superior to other animals (worms). Yet all are animals. Now ethically and practically, some animals deserve greater consideration than others – it would appear that chimpanzees have a greater capacity for suffering than worms, for instance. So too, presumably, do exemplars of the same species, though not to the same degree except in severely pathological cases.
      8. The issue is thus highlighted by the possibility that some of the higher mammals are persons, nearly persons, or persons of reduced degree. If all persons are just persons, period, and all persons have to be treated equally (if that is our ethical outlook), then we might be stuck with duties that seem counter-intuitive (to some, at least). Alternatively, an “all or nothing” stance may be used by us to avoid giving certain sentient beings the care they deserve.
    4. Wantons803
      1. “Wanton” is a term of art introduced in "Frankfurt (Harry) - Freedom of the Will and the Concept of a Person", of which I’ve written a Review804.
      2. According to Frankfurt, wantons are human beings805 who aren’t moral persons, because they lack second order desires (they don’t want to want to do x or be morally like y).
      3. Most human beings (the persons806) care what their moral likes and dislikes are, and want to reform or improve their moral sensibilities and characters. They care about their moral state. Wantons don’t; they are happy as they are (and not because they are moral saints).
      4. While the term “wanton” is a useful one, I think excluding wantons from falling under the concept807 “person808” is making that concept too narrow. Frankfurt may have hijacked the term wanton, but he has left no important semantic gap in so doing (he has probably done no more than perform a service by clarifying the term).
      5. However, in restricting the term “person” to non-wantons, he is (I would claim) invoking a semantic shift that would then require a new term, PERSON-Minus, to cover those wanton human beings who enjoy the non-moral properties that Frankfurt-persons enjoy. Maybe they would be persons of reduced degree809?
  5. The Persistence of Persons
    1. Reductionism810
      1. Reductionism in the field of Personal Identity has much the same meaning as elsewhere in philosophy, namely:-
        1. Explanatory Reduction: explaining PID in terms of simpler concepts811, or
        2. Ontological Reduction: saying that persons812 are “really” other things, or are made up of or constituted by813 other things.
      2. This contrasts with the Simple View814, which denies either of these options.
      3. Currently, my thoughts on the matter are derived from:-
        1. "Garrett (Brian) - Personal Identity and Reductionism", and
        2. "Garrett (Brian) - Animalism and Reductionism",
          but I will add to the topic further over time.
      4. From my perspective, the interesting element is Garrett’s consideration of Phase Sortals815.
      5. "Cassam (Quassim) - Parfit on Persons" claims that Animalism816 is a non-reductionist account of PID – indeed, the best one!
      6. Derek Parfit is credited with introducing the term “Reductionism” into the field of Personal Identity from elsewhere in philosophy.
    2. The Simple View817
      1. Most theories of personal identity assume that PI is reducible to something else, so is to be analysed in terms of physical or psychological continuities, or to be explained by our being human animals.
      2. The simple view is just the contrary of the above:-
        1. "Olson (Eric) - In Search of the Simple View" denies that the distinction is coherent.
        2. "Gasser (Georg) & Stefan (Matthias), Eds. - Personal Identity: Complex or Simple?" (in which the above paper appears) discusses various arguments pro and con.
        3. See "Coliva (Annalisa) - Review of Gasser & Stefan, Eds. - Personal Identity: Complex or Simple?" for a review of the above.
        4. It’s probably best to start with "Gasser (Georg) & Stefan (Matthias) - Personal Identity: Complex or Simple? Introduction".
      3. It seems that Baker’s Constitution View818 is a form of the Simple View: see "Baker (Lynne Rudder) - Personal Identity: A Not-So-Simple Simple View".
  6. Unity of the Person819
    1. There’s a presumption in the philosophy of personal identity that the person820 is a single well-defined individual. This is probably a hang-over from the days of Cartesian821 Dualism822 or when it was assumed that each of us had an indivisible Soul823. Nevertheless, this, depending on what the referent of person824 is supposed to be, can seem (and maybe is) quite sensible.
    2. However this unity has been disputed – for instance in the different interpretations of Multiple Personality Disorder (PMD825):-
      1. Supporters of the Psychological View826 argue that cases of MPD827 show that there can be multiple persons sharing the same body. This assumes that a person is some sort of well-integrated personality, no part of which is shut off from the rest (as is allegedly – though doubtfully – the case in MPD828). So – on this view – each of the multiple personalities829 is deemed to be a separate person830, and so (it is said) the person cannot be identical to the human being831 that houses it. Of course, any idea of integration ought to have gone out when Freud came in.
      2. However, animalists832 (and others) would argue that this is all a mis-description, and that all we have is a fragmented self833 (as is implied – maybe – in the current terminology – Dissociative Identity Disorder), or some other cognitive disorder834 within a single human animal835 (to which the title “person” is properly addressed, they say, though only in the sense of a phase sortal836).
    3. Lynne Rudder Baker837 – a proponent of the Constitution View838 – (CV) claims (fairly plausibly) that each of us839 is individuated by a First Person Perspective840 (FPP). According to the CV, we – the persons – are separate from our bodies, but form a unity with them. In the case of your fission841, she thinks (implausibly) that there would be a fact of the matter (somehow), as to which of the two fission products received your FPP842. You would just know. Well, you wouldn’t, unless there was continuity of consciousness843 throughout the process of fission, as I argue under the topic of the Reduplication Objections844.
    4. This intuition that the person is a unity is referred to as the Unity Reaction in "Blackburn (Simon) - Has Kant Refuted Parfit?" and some other works.
    5. I suppose there could be some discussion of the doctrine of Divine Unity within a Trinitarian framework, but I’ll treat this as out of scope, and probably incoherent.
    1. Counting Persons845
      1. What are the adverse consequences of David Lewis’s perdurantist846 approach to fission847 in personal identity?
      2. According to this theory, there were always coincident stages of the two space-time worms prior to fission. So, there were two persons there all along; yet we counted only one, being ignorant of848 the future fission.
      3. What are the consequences of miscounting? No doubt this depends on what function (or more likely functions) our concept849 of PERSON850 performs.
      4. We might ask whether it is just persons who are miscounted, or are human beings851 also miscounted? This will obviously depend on the TE852, which would need spelling out.
      5. Take the case of a half-brain853 transplant854. In this TE, a person’s psychology is supposed to be duplicated855 within two idempotent half-brains, one of which stays in the donor’s head, the other being transplanted into the empty skull of a recipient. In this TE, the psychological view856 of personal identity is assumed. We start off with one locus of psychology, and end up with two. This is the standard problem of fission857 – which successor is identical to the original person? We seem to want both to be, but – in the absence of perdurantism858 – the logic of identity859 forbids it. Perdurantism860 helps us out, at the cost of there being more pre-fission persons than we thought.
      6. What about other fall-out? Are the earlier stages of the “recipient” patient – viewed as an animal – spatially distributed – so is such a distributed861 thing a human being at all?
      7. What is the core of humanness – is this always the brain862, so that the human goes along with the half-brain, and the body863 is just like any other transplant, only bigger?
      8. Problems with counting persons also allegedly arises in the context of:-
        → Multiple Personality Disorder864, and
        → Commissurotomy865
        While the latter is a precursor for the half-brain transplant described above, both are at least actual situations that are less open to the charge of under-description often alleged against TEs.
      9. Finally, for now at least, and maybe most importantly – the issue of counting arises in Eric Olson’s Thinking Animal Argument866, and the various conundrums involving (partly) coincident objects867.
    2. Personites868
      1. PERSONITE is a term of art related to that of Person869 recently coined by Mark Johnston870, though Eric Olson much earlier used the term “subperson” for the same concept. Olson also considers “cross-persons” – which are aggregates of temporal parts of different persons. He is simply adding the temporal dimension to the plenary ontology that allows any gerrymandered aggregate – my nose and the Eifel Tower – to be a “thing”.
      2. Anyway, a Personite is a temporal part of a person. If personites exist, and have moral status, then ethical problems arise as – for example – one personite gets the punishment for the misdeeds of another.
      3. Olson – without saying so explicitly – thinks that there are the same sort of problems arising for personites as arise for the Constitution View871. He also distinguishes Linguistic from Moral persons; the former are the references of personal pronouns according to our linguistic conventions, the latter are the appropriate recipients of our moral concerns. He can’t see how we can guarantee these coincide if we allow the existence of personites.
      4. Personites are also a consequence of Parfit872’s Relation R as a criterion for what matters in persistence, given that its application is vague.
      5. I doubt there are any more problems with personites than with appear in the problems:-
        → Dion and Theon873,
        → Tibbles the Cat874,
        → The Problem of the Many875,
        and the like. It just adds a temporal dimension, though this is already present in "Lewis (David) - Survival and Identity", as Johnston acknowledges.
  7. Taking Persons Seriously876
    1. Lynne Rudder Baker877 accused animalists878 of “not taking persons seriously”. But, how seriously should they be taken (in metaphysics)?
    2. Probably what really matters ontologically879 is the possession of a conscious880 perspective (though not necessarily – I would claim – a self-conscious881 or first-person882 perspective). This is what we must take seriously.
    3. Baker argued that there exists an ontological difference at this stage too … but, why is the first-person perspective883 as she defines it so very important – all that worrying about death?
    4. Buddhists884 are trying to lose this sense of self885. Do all cultures have this sense?
    5. See886 "Wong (David) - Relativism" for the traditional Chinese view, which takes the community more seriously than the individual.
    6. Whether we ought to take moral or rational beings extra seriously is the point at issue. Clearly we should. But this doesn’t necessarily have any ontological887 implications (as Baker claims). Certain animals – including (most) humans – just have an extra property that demands they be given extra moral consideration.

Concluding Remarks
  1. In our next Chapter, now that we have considered what we are – and what persons are – we consider various metaphysical issues that bear on the arguments for and against the various positions on Personal Identity.
Chapter 4: Basic Metaphysical Issues888
Abstract
Chapter Introduction
  1. There are very many topics of relevance to this Chapter. I’ve attempted to put them in some sort of order and grouping, but this will be an iterative process.
  2. Firstly, I have a general Note on Metaphysics889 which summarises the metaphysical issues of relevance to the philosophy of Personal Identity, but also – via works read – tries to show a wider understanding of metaphysics.
  3. We must then consider the Logic of Identity890, as non-standard logics are favourite means of escaping from some of the puzzle cases that test our intuitions and theories about PID. After considering what Identity is, we need to ask whether the “strict and philosophical” Numerical Identity891 is appropriate for the Persistence of individuals like us, and to distinguish it from Similarity892 (especially in its “exact” form – where individuals are said to be ‘exactly similar’ – so, qualitatively identical (or, at least, mostly so) but not numerically identical). We then need to consider what is involved in discovering (or deciding upon) Criteria of Identity893.
  4. Another important claim is the “Only X and Y Principle894”, that X being identical to Y cannot be affected by the existence of otherwise of some rival candidate Z. This principle is designed to rebuff ideas of a Closest Continuer895 and claims that Contingent Identity896, even if coherent, can be a satisfactory answer to certain puzzle cases.
  5. There are (at least) five other forms of “identity” proposed that require some consideration, namely
    1. Relative Identity897,
    2. Occasional Identity898,
    3. Partial Identity899,
    4. Indeterminate Identity900, and
    5. Vague Identity901.
  6. Of these, the first is the most important, and the last two may or may not be the same idea; but, in any case, discussion of Vagueness902 itself, and the Sorites Paradox903 are relevant to them. It is to be noted that it should only be necessary to disappear down these various rabbit-holes if they become relevant to particular issues in the core of my Thesis.
  7. We now move on to Ontology904 – to what Exists905. We need to consider in what sense Mind906 exists, and what sort of thing it is. Then, what is Matter907, and what is claimed by Naturalism908 or Physicalism909. All this has to be kept within bounds and relevant to the context of this Thesis.
  8. The question of Kinds910 – and in particular Natural Kinds911 – is important in considering whether Person is a natural kind concept: that is, are persons as such naturally occurring or inventions of our conceptual schemes. Just what are Natural Kinds? Universals912? We will also need to consider whether and how a change of kind – Metamorphosis913 – makes sense, and whether it might be a possible transformation for beings such as we are.
  9. Finally in connection with ontology we might consider Artifacts914, especially as they feature in discussions of Constitution and also in various Thought Experiments. They also provide examples of Scattered Objects915, though consideration of whether disassembled bicycles are better described as Intermittent Objects will be left until the next Chapter.
  10. Substances916 and Sortals917 are central to the persistence of any thing, and define their persistence conditions. In particular my claim is that Human Persons are Phase Sortals918 of Human Animals (the substances).
  11. Things can – however – be viewed very differently by denying that there are Individuals919, but only Processes920.
  12. Certain four-dimensional approaches to persistence do away with the substance concept, but I discuss this issue in the next Chapter.
  13. We need to consider whether any of the persistence or identity claims related to Personal Identity are matters of Convention921, whether they relate to human Concepts922 – whether the arguments are just matters of Semantics923 – outside of what is really happening in the world (though many of our concepts do – or are intended to – “carve nature at its joints”). It might be that our claims for ourselves are Fictitious924, and it’s worth investigating the persistence of fictional entities.
  14. Finally, I must include somewhere a few comments on Explanation925. This Thesis is an exercise in “inference to the best explanation” of the facts of, together with our intuitions about, the identity and persistence of persons. We also need to consider how Probable926 these various explanatory schemas might be.

Main Text
  1. Introduction
    1. The purpose of this chapter is to clarify my views on a number of logical and metaphysical issues that are central to the core of this Thesis.
    2. The coverage in the Chapter itself will have to be very brief lest it consume the word-count for the entire thesis. Most information – and in particular the bulk of the justification for my views – will remain in the Notes.
    3. Three background issues, namely my views on:- are covered elsewhere (follow the links above).
  2. Metaphysics930
    1. Many general areas of philosophy are relevant to the topic of Personal Identity, including Ethics and Epistemology, but the questions are mainly metaphysical.
    2. Metaphysics is a large subject. As far as this Thesis is concerned, I’m only interested in it insofar as metaphysical arguments and ideas are necessary to support the overall argument.
    3. Thankfully, metaphysics is no longer regarded as the meaningless nonsense it was supposed to be under the Logical Positivists but as a way of addressing questions that don’t have any other method of approach, and ‘metaphysical’ is no longer a term of abuse.
    4. I do note, though that some metaphysical questions – by their nature – can never have empirical answers. The Logical Positivists would have these down as ‘meaningless’, but I take them as meaningful but indeterminate (except for the individual experiencing the situation in question). See, for example, my discussion of Forward versus Backward Psychological Continuity931.
  3. Logic of Identity932
    1. Identity as a logical concept ought to be rather uninteresting. Contra Wittgenstein933 in the Tractatus, I consider the concept of identity to be both useful and essential.
    2. Despite much argument to the contrary, there’s only one type of identity – that which satisfies Leibniz’s Law of the Indiscernibility of Identicals and is an equivalence relation.
    3. That said, there’s a dispute going back to Joseph Butler and Thomas Reid as to whether there are two forms of identity, one allegedly falsely so-called, namely:-
      1. Strict and Philosophical, and
      2. Loose and Popular
    4. The idea behind this suggestions is that the conditions for the persistence of an object should be really strict – probably involving mereological934 essentialism935 – so that nothing ‘really’ persists through time. At the moment I’m not sure whether this suggestion is true but useless or simply false. We need the concepts of identity and persistence936 for all sorts of practical reasons, and a choice of concepts that never apply in the real world is no help.
    5. While rejecting them, I will still need to consider various deviant “identities” for the light they shed on the issues at hand. They are listed below. Wrong answers to tough questions can be enlightening.
    6. As for the standard notion of identity here are two “Laws” attributed to Leibniz937:-
      1. The Law of the Indiscernibility of Identicals: this just appears to be a law of logic, and is (almost) universally accepted. It states that if “two” objects are identical (that is, “they” are the same object picked out by two descriptions) then “they” have exactly the same properties – both intrinsic and relational.
      2. The Law of the Identity of Indiscernibles: this is a more contentious – and metaphysical – suggestion, and is that if “two” objects share all the same intrinsic and relational properties, they are identical (ie there is only one object, but picked out by different descriptions).
    7. The (apparent) problems with the first938 law are (at least) twofold:-
      1. The same object can have different properties at different times. This is the problem of temporary intrinsics939, and the logic of identity is tied up with resolving this issue.
      2. Intensional properties940 are excluded from consideration – as revealed by the masked man fallacy: the fact that I don’t know that the masked man is my father – though I do know that my father is my father – doesn’t mean that the masked man isn’t my father.
    8. The second Law seems reasonable enough for ordinary macroscopic objects, but
      1. It is allegedly false for quantum objects, and could also be false in a universe consisting of two exactly similar spheres. It is neither a logical nor a necessary truth, if it is true at all.
      2. However, if it is false, it seems to demand haecceities941, where things are distinct just because they are distinct (something empiricists dislike).
    1. Numerical Identity942
      1. There is an initial confusion that needs clearing up. To quote the Synopsis of "DeGrazia (David) - Human Identity and Bioethics":
        1. When philosophers address personal identity, they usually explore numerical identity: What are the criteria for a person's continuing existence?
        2. When non-philosophers address personal identity, they often have in mind narrative identity943: Which characteristics of a particular person are salient to her self-conception?
      2. DeGrazia explores both conceptions, and acknowledges a debt944 to Eric Olson for the former and Marya Schechtman for the latter.
      3. Anyway, numerical identity is the relation a thing holds to itself and to nothing else. This definition is agreed to be rather circular, but the intention is clear. The term “numerical” is used because we use the concept of numerical identity in counting things. Things picked out under different concepts are only counted once if they are numerically identical – if they are the very same thing. I may be a man, a person, a father, a grandfather, a student of philosophy but I’m only to be counted once.
      4. As is noted under the above topic of the Logic of Identity945, “identity” has been divided into two further senses, namely:-
        1. Strict and Philosophical, and
        2. Loose and Popular
      5. If this division is correct, then it is only the “Strict and Philosophical” version of “identity” that is Numerical Identity properly so-called.
      6. However, it is unclear just how strict the “Strict and Philosophical” version should be. If it requires mereological946 essentialism947, then it has no application for material things other than “simples”.
      7. It has to be noted that lots of puzzles related to persistence – for instance fission – rely on the premise that “identity” is an equivalence relation, which may not be the case in the “Loose and Popular” sense of the term – if this usage could be clarified.
      8. I will continue to assume that the persistence of an organism – despite the continual change of parts – is correctly described as identity in the “Strict and Philosophical” sense.
    2. Similarity948
      1. The logic of similarity, like the logic of identity949, is a prerequisite for understanding continuity950 and change951.
      2. It is important to distinguish identity from exact similarity, as in the case of "identical" twins" which are not identical in the strict logical sense.
      3. Some further thoughts:-
        1. “Exact Similarity” is an equivalence relation in that it is reflexive, symmetric and transitive.
        2. “Similarity” is less obviously an equivalence relation – however it is defined – because the transitivity relation may be deemed to fail. Not only is it subject to Sorites952-style paradoxes but suffers from the same transitivity problems as does Memory953 as a criterion of PID.
        3. “Identical twins” – despite the suggestion above – are not even “exactly similar” in the strict sense, as it’s only genetically that they are exactly similar. In principle, each set of chromosomes in either twin is exactly similar to any other. And, I suppose, we could say that as their genomes are abstract objects, they are numerically identical. But the bodies and minds of identical twins – while “similar”, barring accidents, are not “exactly similar”, other than immediately after birth (and then only if we’re lucky: their conditions in the womb and throughout the birth process may differ, sometimes tragically so).
        4. “Exactly similar” individuals of whatever kind would seem to have all non-relational and non-intensional properties in common. To make the term useful in practical life, we might have to allow some latitude. If I want my television replaced by an “exactly similar” one, I want one that’s how the one I bought ought to have been without whatever defects are inducing me to return it. Nor may I care for trivial differences in weight, surface marks and the like.
        5. “Similarity” applies to particular properties of things (“wearing similar ties”) or to individuals in their entirety (as “identical twins”).
    3. Criteria of Identity954
      1. Maybe the distinction between Criteria of Identity and Persistence Criteria955 is that the former can be synchronic, or refer to multiple sightings of what may be the same thing. The latter refers to change956.
      2. We might want to be assured that the Morning Star is (identical to) the Evening Star, which is Venus – and – indeed – whether it is necessarily957 identical to Venus, given that it is Venus. Or so claims Saul Kripke. This is the topic of “Identity Criteria”, provided Venus remains substantially unchanged during the period of interest.
      3. Persistence Criteria958 – in this example – would relate to whether Venus would remain Venus if it merged with a large asteroid and a hunk broke off, or suchlike.
      4. For the moment, I just note that there are two categories of criterion:-
        → Metaphysical and
        → Epistemological.
      5. Metaphysical criteria are those that, if they obtain, establish identity irrespective of whether anyone knows about them.
      6. Epistemological criteria reflect how we know that identity obtains.
      7. I might also add that there are different criteria of identity for different kinds959 of thing, including:-
        1. Persons960,
        2. Organisms961,
        3. Inanimate Physical Objects: presumably considered as lumps of Matter962, or as Artifacts963,
        4. Events: Which would include Lives964, if that’s what lives are,
        5. Etc.
      8. There are no criteria of identity for “things in general” (or even “persons in general”, for that matter).
    4. Only 'X' and 'Y' Principle965
      1. This principle (also known as the ‘Only X and Y Rule’, with and without various forms of quotation mark around the variables) – probably first enunciated by Harold Noonan – claims that in saying whether X is identical to Y, the existence of some other entity Z should have no bearing.
      2. The principle is averse to Closest Continuer966 theories, where a “better candidate” – often in modal situations – can undermine the case of an entity to be the continuer of – that is, identical to – an earlier entity; so, “X would have been identical to Y were it not for the existence of a better candidate Z”.
      3. As such, there is some connection with supposed Contingent Identity967.
      4. I accept this principle, though this is not the case for all who clearly understand and reference it.
      • Closest Continuer968
        1. “Closest Continuer” is an alternative term for the concept “Best Candidate”. Closest Continuer solutions to puzzle cases have to be rejected beause they violate the commonsensical Only X and Y Principle969.
        2. This situation – where we’re tempted to reach for the ‘best candidate’ – occurs where we have more than one candidate as the continuer of an individual, and we feel we have to make a choice because:
          1. There is only one social or legal role to fill, and
          2. The logic of identity causes a problem.
        3. Consider Locke970’s prince and cobbler or Williams’s body swapping971, but without the swap (ie. where only half the thought experiment is performed, so we have two identical psychologies). If the cobbler’s body is informed by the prince’s mind, then Locke claims that the cobbler is the prince. But if the prince still exists in his own mind as well, there’s a better candidate (says Nozick, for instance in "Nozick (Robert) - Personal Identity Through Time" or "Nozick (Robert) - The Identity of the Self: Introduction"), so the cobbler then isn’t the prince after all – but how (so the objection goes) can the existence of someone depend on the existence of someone else?
        4. A Perdurantist972 can accommodate these situations. This is by saying that prior to the point of decision, there were always two person stages co-located (ie. there were always two persons present, they just happened to share all their stages up to that point), and that only following the point of decision can we distinguish them. So, we don’t have to choose who is really the prince – they both are, in the sense that each post-decision spatio-temporal worm forms part of a larger spatio-temporal worm that includes pre-decision princely stages. Logical identity only applies to complete spatio-temporal worms, and there were always two worms sharing stages.
        5. Of course, we might have a convention973 that enables us to choose in a principled manner who can fill which role (the prince remains in his palace, the cobbler’s body informed by the prince’s mind retires to a madhouse). Yet (if we adopt the perdurantist view and the psychological criterion974) they are both the prince for all that.
        6. My own view used to be simply that the cobbler (ie. cobbler-body) just undergoes a radical psychological change, and so remains the cobbler all along. But I now think the thought experiment may be underspecified. Given the supervenience975 of mind on brain976, the superposition of one psychology on another would have radical physical consequences that would most likely destroy the original, and replace it with a clone977 of the copied brain. But it is a clone, for all that, and not the original978.
        7. There are other Thought Experiments979, such as varients of Teletransportation980 where Closest Continuer possibilities arise – I will discuss these in Chapter 10981.
        8. All the above notwithstanding, Perdurantism982 – to be evaluated in Chapter 5983 - is a fairly fringe position to take that is often taken as having too great a metaphysical cost to be introduced simply to sort out worries caused by the Only X and Y Principle984. We need to adress the puzzle cases individually and see just why we’re tempted by Closest Continuer solutions. These will – I would hope – arise because of mistaken approaches to the persistence of the entity in question that appears to be undergoing fission985, duplication986 or some other viscissitude.
    5. Heterodox Views
      • The orthodox approach to the Logic of Identity987 is to treat it as a necessary equivalence relation. I follow this approach. However, in response to various TEs988, deviant forms of the Identity relation have been devised, and some are still popular.
      • Contingent Identity989
        1. The idea of Contingent Identity arose990 in "Gibbard (Allan) - Contingent Identity", which considers the TE of the Statue and the Clay991.
        2. The TE relates to the topic of Constitution992. We are to consider a statue and the lump of clay of which is constituted. If we arrange things carefully, the two might coincidentally come into and go out of existence at the same time. If so, are they not identical, given that they would seem to have all the same properties? Yet, they might not have been temporally coincident – in the normal case, the lump would be formed first, and only slowly be sculpted into a statue. So, they are only contingently identical, the argument goes. And this TE shows (it is said) that far from being a necessary relation, identity may only contingently hold.
        3. The logic of identity993 is so secure that it is sensible to look for other explanations of the TE. Of course, the divinations of just what is wrong with the TE are many, which doesn’t necessarily mean that the TE is misleading for any of these reasons.
        4. Baker994, for instance, has “relation to an art world” as one of the properties the Statue has which is not had by the Lump. So, by Leibniz’s Law995, the two are never identical.
        5. I’m suspicious of any TE involving artefacts996. Any Intuitions997 we have may be Conventional998 rather than discoveries.
      • Indeterminate Identity999
        1. The idea of Indeterminate Identity arises in response to certain TEs. However, the logic of identity is so secure that it is sensible to look for other explanations of any TE that appears to bring it into doubt.
        2. Two seemingly related suggestions are Vague Identity1000 (VI) and Indeterminate Identity (II).
        3. I’m not sure of the distinction between VI and II, having studied neither in any detail, but:-
          1. I’d have thought that VI is a metaphysical claim alongside the suggestion – allegedly refuted by Gareth Evans – that there can be vague objects.
          2. In contrast to this, II sounds like an epistemological claim – that there are identity claims the truth-values of which we cannot know.
          3. The above distinction is somewhat moot if the puzzle of Vagueness1001 is seen as at root epistemological, as by Timothy Williamson.
          4. To make matters worse, there are at least two other terms used:-
            → “Indefinite Identity”, and
            → “Imperfect Identity”
            Both these terms sound metaphysical, so I’ve assumed (for now) that they are the same as “Vague Identity1002”.
        4. However, a quick look through the abstract of the papers on the reading lists suggests that the two notions are related – in that papers titled as related to one actually seem to relate to the other. "Parsons (Terence) - Indeterminate Identity" looks like a good study of the whole topic but uses II to mean indeterminacy in the world, which is a metaphysical claim.
      • Occasional Identity1003
        1. Occasional identity is a response to TEs such as the fission1004 of an individual – such as amoeba – into two qualitatively identical individuals. We want to say that both are numerically identical to the parent, but the logic of identity1005 forbids this unless we claim that the two daughters are numerically identical to one another, though even this seemingly-impossible claim has been supported: see "Miller (Kristie) - Travelling in Time: How to Wholly Exist in Two Places at the Same Time".
        2. So, the claim is that the amoebae were once identical (and co-incident: though not in the sense supposed by Constitution1006 or Perdurance1007 or co-location), but now are not.
        3. This makes numerical identity1008 into a temporary (hence “occasional”) matter.
        4. It’s important not to confuse “temporary identity” with “temporal identity”. Maybe some philosophers – even if not confused – have been careless with their terminology. Some philosophers seem to use “temporal identity” for “diachronic identity” while others use it for “occasional identity”.
        5. An answer to this TE is to appeal to perdurance1009 – the daughters were always distinct, but just shared their pre-fission stages. This should maybe be a last resort as there are other explanations which I’ll cover when I consider Fission1010 in detail.
      • Partial Identity1011
        1. It seems that “Partial identity” is a mereological1012 claim, that something that has some of the parts of another things is “partially identical” to it. Two things are “partially identical” to the degree that they share parts. So, on this account, I am partially identical to my own head, and I am more partially identical to the mereological fusion of my head and my right hand.
        2. However, the term also seems to apply to properties1013 (taken to be universals1014, with universals viewed as the mereological sum of their instantiations).
        3. I doubt this has much relevance to my Thesis, though it might just be relevant to Brain Transplants1015.
      • Relative Identity1016
        1. Relative identity is invoked to try to explain some people’s intuition1017 that – following certain exigencies (say, a nasty bang on the head; or the Phineas Gage situation; see "Tobia (Kevin Patrick) - Personal Identity and the Phineas Gage Effect") – I might be the same Human Being1018, but not the same Person1019.
        2. So, it is said by the Relative Identity theorist, the identity relation is indexed to a sortal1020. It is said that it makes no sense to say that A is the same individual as B unless we say “the same what”. I think this is true, but it doesn’t mandate Relative Identity,
        3. David Wiggins is sometimes accused of straying into Relative Identity by insisting that questions of persistence are Sortal1021-relative. "Ferner (Adam) - Metaphysics and biology: a critique of David Wiggins’ account of personal identity" is at pains to point out that this is not the case. Relative Identity claims that the very same thing (X) can be identical to Y under one sortal and to Z under another. Most philosophers – including Wiggins and myself – deny this.
        4. My view is that – while it is true that we need to be careful what individual we are to pick out for identity claims – once we have picked out an individual (say in more than one way), it is self-identical whatever description we are using. And necessarily so as Saul Kripke has shown in his Hesperus / Phosphorus / Venus discussion in "Kripke (Saul) - Naming and Necessity".
        5. So, when we are thinking of what we imagine to be a single thing under two descriptions, then if we imagine the thing under one description coming apart from the thing under another, then one or other description doesn’t really pick out that thing as a substance1022, but (say) picks out a property of that substance.
        6. So, returning to our example, when we say “same person”, the term “person” is ambiguous.
          1. It can stand as a proxy for “human being”, or
          2. “Same person” can mean “has the same personality1023”.
        7. When this is understood, in neither case are we tempted into espousing relative identity:-
          1. In the first case we have identity, and
          2. In the second case we are comparing a property of a substance, and substances can change their properties over time without ceasing to be the same substance.
        8. So, Phineas Gage continues to be the same substance (human being – or maybe human animal) despite a radical change of personality.
      • Vague Identity1024
        1. I have nothing to say on this topic other than what I’ve said under Indeterminate Identity1025.
        1. Sorites1026
          1. The Sorites paradox – that of the heap – arises in many areas of philosophy, but specifically on the topic of vagueness1027.
          2. It is a TE1028 invented by the Greeks – see "Diogenes Laertius, Galen & Cicero - On the Sorites".
          3. From my perspective, there are two points of interest:-
            1. Firstly, just when is an individual correctly classified as an X, where X is a vague concept – or an epithet which may be applied as a matter of degree.
              → Specifically, is “Person1029” such a concept? Are there Degrees of Personhood1030?
            2. Secondly, as an argument-form.
              → Peter Unger used Sorites-style arguments to argue that we and other things don’t exist. I discuss these arguments under Nihilism1031.
        2. Vagueness1032
          1. Vagueness is a wide and interesting area of enquiry, and I will restrict most of my investigations to areas relevant to personal identity. So,
            1. While there can be clear paradigm cases it may be vague (ie. uncertain, or indeterminate) whether some particular instance is a paradigm case.
            2. There can be vague boundaries to the concept person1033.
            3. Also, maybe there can be persons of varying degrees1034.
            4. Maybe some higher mammals possess many of the qualities of persons, but to a reduced degree.
          2. All this is covered, more or less, in this chapter under other topics, including Vague Identity1035, Indeterminate Identity1036 and Sorites1037 and in Chapter 71038 under the Problem of the Many1039.
  4. Ontology1040
    1. Ontology is the study of what exists1041.
    2. In the context of the philosophy of personal identity, ontological questions ask what persons1042 really are.
    3. Maybe it’s best first of all to step back, with Locke1043, and consider the sorts1044 of thing that persist and establish the persistence conditions1045 for these sorts. For example:-
      1. Bodies1046,
      2. Animals1047,
      3. Human Beings1048.
    4. The ontological question is whether – with Locke – we should add Persons1049 to this list.
    5. Lynne Rudder Baker1050 held the view that when a person comes into existence, so does a new entity, of a new kind1051. A world without persons would be ontologically impoverished.
    6. But is this so, or do existing entities simply gain new properties1052?
    7. We must even (on certain definitions of PERSON1053) ask whether there are any1054, or whether the term can be eliminated. See:-
      1. "Unger (Peter) - Why There Are No People" and
      2. "Unger (Peter) - I Do Not Exist".
    8. Since Unger’s sorites1055 arguments eliminate all material entities with parts1056, not just persons (though the elimination of persons on this account depends on the assumption that they are material entities with parts) I, along with the later Unger, wish to reject their conclusions by denying the soundness of the argument-form.
    1. Existence1057
      1. For something to persist1058 is for it to continue to exist. So, we need a basic understanding of just what it is for something to exist, one of the foundational questions of metaphysics.
      2. The topic here is one of logic1059 – what it is for a thing to exist – rather than ontology1060 – what exists, though there will be some overlap between the discussions of the two concepts.
      3. There’s a question whether existence is univocal. Do abstract objects exist in the same way as concrete particulars? What sort of thing are personalities1061, and where, if anywhere, do they exist?
      4. Some matters of existence are covered elsewhere in this Chapter, namely:-
        1. Vague Existence1062
      5. Other matters are to be addressed in other Chapters:-
        1. The various Nihilist1063 positions in Personal Identity: Chapter 21064
        2. The possibility of Intermittent Existence1065: Chapter 51066
        3. Disembodied Existence1067: Chapter 111068
      6. There are many interesting questions about existence that I won’t have time or space to address, unless they come up as essential factors in arguments about Personal Identity. For instance:-
        1. Meinongian claims, and the possibility of Subsistence for things – like unicorns – that don’t exist.
        2. The notion of necessary1069 existence This topic gets tangled up with the Ontological Argument1070 for the existence of God. I’ve omitted all but a taste of this topic from the reading list.
    2. Mind1071
      1. The topic of Mind – and just what we mean by minds – is very large, and not one I can address in any detail.
      2. However it’s central to the Psychological View1072, which says that this is what we are1073 most fundamentally.
      3. At the very least, having a mind is a necessary but not sufficient condition for being a Person1074, though individuals who have ‘lost their minds’ may be accorded the status of persons on account of their past mindedness.
      4. However, Animalism1075 denies that the mental has anything to do with our persistence conditions1076 – we can survive1077 without any mind at all, though we might not have anything that matters to us1078.
      5. Mindedness is a lesser property than Consciousness1079, let alone Consciousness of Self1080.
      6. It seems that minds can be attributed to appropriately-configured machines1081, and even to plants1082.
      7. Whether reality is correctly divided between the mental and the physical is discussed under Dualism1083.
    3. Matter1084
      1. “Matter” works fine as a contrast to “mind1085”, even though relativistic Mass/Energy is preferred in physics, though “physicalism1086” is preferred to “materialism” as the contrast to dualism1087 (or idealism).
      2. The persistence conditions1088 of “masses of matter” are usually different to those of the things that matter constitutes1089, or so it is said (and sometimes denied).
      3. For example, in the (alleged) “corpse1090” problem for animalism1091, the corpse is said to be distinct from the animal1092 for the above reason – that corpses are masses of matter to have different persistence conditions to the animals they instantaneously constitute. So, where does the corpse come from? Has it always existed co-located with the animal? Do we then end up with a constitution account of animalism1093, whereby – in contrast to the CV1094 of Persons – it is the animal1095 – rather than the person1096 – that is constituted by the body1097? This will be considered in later Chapters.
      • Naturalism1098
        1. Ontological Naturalism is the assumption – tacit or explicit – that there are no supernatural entities or causes in nature. "Baker (Lynne Rudder) - Naturalism and the First-Person Perspective: What Is The Problem?" distinguishes two forms of naturalism:-
          1. Weaker: there is no supernatural reality.
          2. Stronger: science is the arbiter of reality and knowledge.
        2. Methodological Naturalism makes no ontological claims, but just adopts the reasonable stance that we should proceed (in the sciences, but also in historical investigations and in everyday life) as though Weak Naturalism were true. This form of naturalism cannot be adopted when addressing supernatural claims, without begging the question. The same goes for Weak Naturalism, of course. But Strong Naturalism (in the absence of Methodological Naturalism) might be consistent with supernatural claims. But since supernatural events are – to say the least – rare, it is best to presume naturalism unless forced by the evidence to assume otherwise – and even then it may be best simply to await further evidence or the advance of science.
        3. What Baker terms Strong Naturalism seems to be the same as, or to include, Naturalised Epistemology.
        4. I just note in passing that “naturalisation” – that is, explaining in fully naturalistic terms (possibly involving reduction1099) – is a process that can be applied to just about any field.
        5. I leave it as an open question at this stage whether naturalism is equivalent to physicalism1100, implies it, is implied by it, or is orthogonal to it.
        6. The relevance of this topic to my Thesis stems from my interest in the Christian Materialists1101, and also from the topic of resurrection1102, or other “possibilities” of post-mortem survival1103.
      • Physicalism1104
        1. I reject any form of mind-body dualism1105 or immaterialist monism. There are no souls1106, if a soul is an immaterial substance separable from a body1107.
        2. But, I need to investigate Dean Zimmerman’s recent “emergent dualism” (see "Zimmerman (Dean) - Reply to Baker's 'Christians Should Reject Mind-Body Dualism'"), despite the fact that his main motivation is a desire to conform to a traditionalist reading of Christian doctrine.
        3. There is a comparatively-recent move within certain Christian circles (by the Christian Materialists1108) to adopt physicalism and focus on Resurrection1109 – rather than the immortality of the soul – as a solution to most-mortem survival.
        4. Given my focus on physicalism, I will need to give some attention to the identity and persistence criteria1110 of material objects1111 as such.
        5. There are too many versions of physicalism for its endorsement to deliver much without clarification, so I will need to pursue the matter in some detail.
        6. For the moment, I simply wish to note (or claim) that:
          1. “The physical” encompasses both body1112 and brain1113 (ie. the physical criterion1114 of personal identity would be satisfied if continuity of brain were essential for the persistence of the person1115).
          2. The brain is more important than other physical organs for the persistence of the human being1116 or the human person1117.
        7. Consequently, I think it worthwhile to conduct a detailed investigation into the functional roles of the various parts of the brain, CNS (Central Nervous System) and PNS (Peripheral Nervous System) and how these and the residue of the body are coupled together.
        8. Such matters may be relevant to the realism of the various thought experiments1118 about brain transplants1119, cerebrum transplants and such-like.
        9. It is, however, debatable how important these details are. For example, debates seem to continue about the possible identity of pain and C-fibre-firing, when it’s now acknowledged by all the participants in such debates that the physical realisation of pain-states in mammals requires a lot more than C-fibres (see "Wikipedia - Group C nerve fiber"). The assumption seems to be that the details don’t matter and that similar arguments could be constructed whatever the physical realisation of mental states might be.
    4. Kinds1120
      1. This may be an important topic, particularly in distinguishing Natural Kinds1121 from other Kinds, as the question whether Persons1122 (or even human persons1123) fall under a natural kind concept is critical to the debate between animalists1124 and those favouring the constitution view1125.
      2. I can’t see much difference between Sortals1126 and Kinds, and Natural Kinds1127 are obviously a subset of Kinds. Phase Sortals1128 are a bit like jobs, so may not be kinds at all.
      3. But if (as I believe) persons are Phase Sortals1129 of human animals1130, then this can’t be right if persons form a kind as seems likely.
      4. Kinds may be instantiated Concepts1131; so, are sets of things, but with a principled array of entry-criteria, which would allow members of multiple natural Kinds to belong (for Persons1132, this might be the usual suspects – God, aliens, human beings, the great Apes, and so on).
      • Natural Kinds1133
        1. This topic is a subsidiary to that of Kinds1134.
          1. A kind is a way of categorising things.
          2. Some ways of categorising things are more “natural” than others – ie they reflect the way the world is, rather than the way we and our interests are. Natural kinds “carve the world at the joints”.
          3. So, toothbrushes form a kind, but it is not a natural kind, whereas lions form a natural kind, as does gold.
        2. A good general introduction to this topic is "Hawley (Katherine) & Bird (Alexander) - What are Natural Kinds?".
        3. I have some questions on Natural Kinds related to the topic of PID:-
          1. Is the concept of a PERSON1135 a natural kind concept?
          2. Can PERSON be analysed in terms of other concepts, or do we presuppose it?
          3. See, for example, "Madell (Geoffrey) - The Identity of the Self" for the alleged unanalysability of the concept PERSON. This is the Simple View1136.
          4. It may be the case that SENTIENT BEING (or RATIONAL BEING) is the natural kind concept, and that PERSON, with its social / legal / moral overtones, is something cultures assign.
          5. Even so, the concept HUMAN ANIMAL1137 is really the natural kind concept, exemplars of which gain or lose the properties1138 of sentience, rationality, and even the first-person perspective1139.
        4. When does a natural kind come into existence?
          1. Natural kinds are concepts1140, and such questions are controversial.
          2. Maybe I should side-step this question and simply talk about when the concept becomes instantiated, which is when the first individual that falls under it comes into existence, though this may be before the concept is formulated or even conceived of.
        1. Universals1141
          1. What have Universals to do with Personal Identity? Well, not a lot – except David Lewis introduced them as an example to distinguish perdurance1142 from endurance1143 – Universals being analogous to enduring entities as they are (allegedly) wholly present in each particular that possesses the property covered by the Universal. So, (a particular shade of) redness is (said to be) wholly present in each red object exemplifying that shade.
          2. There’s also a connection with Natural Kinds1144. In "Hawley (Katherine) & Bird (Alexander) - What are Natural Kinds?", the authors suggest that Natural Kinds are “Complex Universals”.
          3. I also – probably heretically – have the view that Universals themselves might have persistence conditions1145. My example is that of a book. “Pride and Prejudice” is a book – but both a Universal that can be variously instantiated in physical books, or (now) eBooks. But it (or a better example) might go through several editions. What makes all these editions “of the same book”?
      • Metamorphosis1146
        1. Metamorphosis involves a radical and fairly rapid change of bodily1147 form in the same individual1148, by comparison with “business as usual” growth and maturation – catastrophic injury doesn’t count. No doubt this begs the question somewhat in assuming that we do indeed have the same individual.
        2. Tadpoles → frogs and caterpillars → butterflies are, in seems to me, different kinds of cases of metamorphosis. If there is anything it’s like to be a caterpillar or a tadpole, the caterpillar’s experience of metamorphosis will differ from that of the tadpole’s, as the caterpillar transforms into the butterfly via goo, whereas the tadpole’s metamorphosis into the frog is continuous1149 with it remaining an active organism1150.
        3. While “Tadpole → Frog” is a paradigm case of Metamorphosis, presumably there’s no more metamorphosis in this transformation than there is in fetus1151 → neonate in humans and mammals generally? Isn’t the difference between the maturation of a tadpole and fetus simply the environment and food-source? Maybe not, since the tadpole’s gills and tail have to be re-absorbed and the material used for the frog’s front and rear legs respectively. The use of the collagenase enzyme in this process is described in detail in "Al-Khalili (Jim) & McFadden (Johnjoe) - Life on the Edge: The Coming of Age of Quantum Biology", Chapter 3, pp. 110-112.
        4. If the account of Sortals1152 is correct, metamorphosis involving a change of Ultimate Sortal is a logical impossibility (in the sense of the very same thing metamorphosing as in the frog to prince case). I suppose, in this last case, we might have the Ultimate Sortal as Organism1153 of which Frog and Prince (or Human Being1154) are Phase Sortals1155, but then, what is an Ultimate Sortal in one context is a Phase Sortal in another. Is this an issue?
        5. How should the (supposed) case of bodily transformation to be expected by the Christian at Christ’s return be understood? In that case – see 1 Corinthians 15:521156 – rather than dying and being resurrected1157 to a new body, the living body is “… changed. In a moment, in the twinkling of an eye, at the last trump”. Is this a case of metamorphosis? What about the dead (supposedly) coming out of their graves during the same event? Are these Corpses1158 metamorphosed into (resurrection) bodies?
        6. "Bynum (Caroline) - Metamorphosis and Identity" is presumably the jumping-off point for this topic, though the detailed text seems overly fixated on medieval fascination with werewolves.
    5. Artifacts1159
      1. Since artifacts are human inventions, they do not fall under natural kind1160 concepts, and so their persistence conditions may be to some degree a matter of convention1161. Since human beings1162 are (at least) organisms1163, analogies with artifacts may be moot, to say the least.
      2. An interesting notion – I think due to Trenton Merricks (in "Merricks (Trenton) - Objects and Persons") and others – is nihilism1164 with respect to artifacts. This is the view that there are no statues, but only atoms arranged statuewise.
        • If this is a correct account, then this would undermine the prime support of the Constitution View1165.
        • The reason being that statues, and the like, are prime examples and motivators of the CV, whereby you can have two things (of different sorts1166) in the same place at the same time, one of which constitutes1167 the other.
        • If there are no such statues, then all this falls apart.
        • Yet of course there are statues, but in what sense?
        • An idea I intend to play with (this may be Merricks’s, for all I know) is that artifacts are shared ideas (memes1168) projected onto the physical objects (which are indeed collections of atoms arranged X-wise, and the form of the X-wise structure is deliberately chosen to enable it to perform its function).
        • This agrees with, say, Baker’s notion that statues exist only in relation to an art-world. But they are ideas rather than things.
      3. See also the Ship of Theseus1169 under this head. It is the standard conundrum concerning the persistence conditions of artifacts, which are also the clearest contenders for the existence of intermittent objects1170. Some philosophers (sensibly) claim that a bicycle can survive being disassembled and then re-assembled, with the (rash) assumption that the bicycle doesn't exist in its disassembled state. Well, my view is that the bicycle does exist in the disassembled state. I'd be miffed if someone returned my bicycle in a disassembled state, but my miffedness wouldn't be because I thought I'd not received my bike back, but because it would be a pain to re-assemble it.
      4. The intermittent existence of objects is relevant to the issue of resurrection1171 for physicalists. But the artifact model isn’t appropriate here. A bike can't survive its parts being mulched up and re-manufactured. In any case, we can't logically get our original atoms back (as organisms1172 exchange atoms with their environment all the time, so there's no such things as "my atoms", since any such things would (over time) be shared with other organisms).
      5. There’s a disagreement – it seems – between Western and Eastern traditions as to whether material continuity and connectedness1173 are required for the persistence of artifacts – in particular, for buildings. Japanese Shinto temples can be rebuilt next to one another and swapped over on a 20-year cycle while remaining “the same temple” (or temple complex). It’s the form that’s important, not the matter1174, and it’s deemed essential to keep the matter in good condition – though not, of course, the same matter – using traditional crafts to replace it. See "Han (Byung-Chul) - Shanzhai: Deconstruction in Chinese". This is something of a problem even in the Western tradition, as the reductio of “Trigger’s Broom” exemplifies.
      6. There is the claim that adopting a functional approach to personal identity is effectively treating persons as artifacts (which are defined by their functions – eg. a corkscrew – though there can be broken exemplars that can no longer perform the function). Presumably this is intended as a reductio ad absurdum of the functionalist1175 account of personhood.
      7. Wiggins touches on the subject of persons as artifacts in "Wiggins (David) - Personal Identity" (in "Wiggins (David) - Sameness and Substance Renewed"). From a quick look, it seems to me that Wiggins is saying that if we tinker around with human beings enough (whether genetically or by heroic surgical intervention), we have effectively turned them into artifacts of our own devising, and so there is no longer a natural-kind1176-constrained answer to questions of their persistence conditions1177. Since Wiggins seems to equate persons1178 and human beings1179, the thought experiments1180 if carried out in a world would lead to persons that are artifacts. But maybe he’s saying something deeper.
      • Scattered Objects1181
        1. The possibility of scattered objects is of fairly limited interest in the study of Personal Identity, though the topic is discussed passim in "Olson (Eric) - Immanent Causation and Life After Death", and also in my review1182 of "Zimmerman (Dean) - Problems for Animalism".
        2. The concept features in the discussion of intermittent objects1183 where – rather than admit of such things – an alternative is to allow the disassembled bicycle to be a scattered object.
        3. Another locus of interest is in certain medieval concepts of the resurrection of the body. If the body is gathered together again from its “dust”, then maybe it had continued to exist as a scattered object. The problem with this is that organisms don’t own their parts essentially, and they can be shared over time by a number of organisms (witness the old worry about cannibalism, and the counterfactual reply that the body “rejects” cannibalised flesh).
        4. A problem with allowing scattered objects is that it undermines our intuition that one of the things that grounds the persistence1184 of material objects is spatio-temporal continuity1185.
        5. Scattered objects arise perforce if we hold to mereological essentialism1186, or allow that any gerrymandered object exists1187 and has its parts essentially.
  5. Substance & Process
    1. Individuals1188
      1. We often refer to persons1189, or human beings1190, as “individuals”, but this is just an index for “X”, where “X” is a “person”, “human being”, or such-like, without being explicit about what category of being is referred to.
      2. Hence, it may betray confusion or uncertainty about the sort1191 of thing we are1192, an equation of the various possibilities, or the assumption of one position as the only available one.
      3. Be this as it may, the main topic to be covered under this head will be the problem of individuation – how to tell one thing from another.
      4. Individuation is an important question because until we have identified a particular individual, and separated it from others in the locality, we can’t sensibly talk about its persistence1193.
      5. The whole idea of individuation depends – in part – on adopting a substance1194 rather than process1195 view of metaphysics. However, if we take the process line, we then have to have criteria for individuating processes, which may be even more difficult, so the question doesn’t just go away.
    2. Substance1196
      1. This is a big subject but, basically, I take a substance to be an individual (relatively) self-standing thing (a particular) that has properties that may change over time.
      2. My specific interest in this topic is whether persons – qua persons1197 – are substances. This depends what the term “person” refers to. My contention is that “person” is a property (or collection of properties, or an honorific) of a substance rather than a substance in its own right. So, animalism1198 would have it that the substance is the human animal1199, which for part of its existence has the property of being a person.
      3. There’s the question whether the substance-view is inconsistent with perdurantism1200, whereby individuals are not wholly present at a time, but are “space-time worms”. On this view, for an animalist, a person would be a section (or a collection of sections) of the space-time worm that is the human animal.
      4. But on either view, a person is a phase sortal1201 of the human animal.
      • Sortals1202
        1. Using Howard Robinson’s terminology ("Robinson (Howard) - Dualism (Stanford)"), the Ultimate Sort of a thing is that property1203 without which the thing ceases to exist.
        2. However, an individual falling under a Phase Sortal1204 can lose the property that defines the phase without ceasing to exist.
        3. Ultimate Sorts are presumably the same as Baker1205’s Primary Kinds1206, though I can’t remember if she has an analogue of a Phase Sortal.
        4. The standard example is of a Human Being1207 (as the Ultimate Sort) and Child (as a Phase Sortal).
        5. So, is personhood1208 an attribute of a human being, like “childhood”, that a human being can either possess or lack, or are persons ontologically1209 separate from “their” human beings?
        6. Wiggins1210 argues that we can’t talk of the persistence conditions1211 of anything until we know what sort it is.
        7. Olson1212 claims that it’s futile to talk of the persistence conditions of persons1213 per se – if human beings, God and angels are all persons – since their persistence conditions (assuming the existence of God and angels, for the sake of the argument) are completely different. This lack of a common set of persistence conditions would indicate that Person1214 is not an Ultimate Sort.
        1. Phase Sortals1215
          1. I may have misappropriated this term. In its standard usage (I am told), a phase sortal is a biologically-motivated term. The clearest examples are of individuals that metamorphose1216; for example the butterfly: egg → larva (caterpillar) → pupa (chrysalis) → adult (butterfly). The caterpillar is a phase sortal of the organism, with clear spatio-temporal boundaries. My standard example is of Child, which is a (vaguely1217-boundaried) biological phase of the substance sortal Human Being1218.
          2. An example of a possible human phase sortal that is a non-person1219 is Infant. This example might be especially relevant to the topic, because “infant” is derived from the Latin in-fans “without speech”, and the capacity for speech is often claimed to be an essential prerequisite for being a person1220.
          3. Any suggestion that the concept Person1221 is “no more than” a phase sortal of an umbrella concept isn’t intended to imply unimportance. Rather, simply that persons might not form a kind1222 (and in particular a natural kind1223), nor be substances1224, but that personhood might be a property1225 of substances (of animals1226, for instance).
          4. What about “periodic” phase sortals such as Student? A human being can “pop in and out of” studenthood by registering or deregistering, but he can’t do this with childhood. Which model suits personhood? See the discussion of intermittent objects1227.
          5. However, if the above suggestion that the concept Phase Sortal is biologically motivated is correct, a purely social concept such as Student is not a phase sortal in this sense, and Person might not be either. I could, of course, invent a new term of art.
          6. All roads seem to lead to Wiggins1228 (Paul Snowdon refers to him a lot in the context of Animalism1229, though I seem to remember that Eric Olson thinks Wiggins isn’t a true Animalist, but a supporter of the psychological view1230).
    3. Process Metaphysics1231
      1. A foundation-stone of my – and most philosophers’ – account of identity is that “things” – or at least some “things” – exist1232. Without things1233 to persist, there can be no persistence1234 and no diachronic identity.
      2. There has been much discussion about just which things exist, and which things make up – or compose1235 – other things.
      3. This is the Substance1236 view of Ontology1237.
      4. However, other philosophers cast doubt on the existence of things, and prefer to focus on processes – in particular, biological ones. This is “process metaphysics”, or “naturalistic metaphysics”.
      5. Anne Sophie Meincke, in collaboration with John Dupré, seems to be proposing a non-substance1238 version of Animalism1239.
      6. Also, it seems that Chinese philosophy eschews substance in favour of process, at least according to Byung-Chul Han.
      7. I’m not sure how much of an impact this stance has on my research. I’d already suggested that animals1240 are each individuated by a life1241, itself a process.
  6. Convention1242
    1. Can it ever be right to say that whether a thing persists1243 or not – or even exists1244 or not – is merely a matter of convention?
    2. Because of the existence of a First Person Perspective1245, it seems difficult to imagine in the case of Persons1246, but it may be true of artifacts1247.
    3. Issues arise with Thought Experiments1248 that stretch the boundaries of our Concepts1249, so that it might be argued that it is arbitrary whether an individual survives the vicissitude described – maybe inadequately – in the TE.
    4. But, it might be argued, individuals falling under a Natural Kind1250 concept persist or fail to do so irrespective of our language and our concepts.
    5. However, if personhood is an honorific, rather than a natural kind, concept then whether an individual persists as a person might indeed be conventional – depending on our concept person1251.
    6. But whether an individual persists as an animal1252 is not a matter of convention, though it might be subject to epistemological vagueness1253.
    1. Concepts1254
      1. Concepts are important in "Unger (Peter) - I Do Not Exist". Unger’s answer to the problem of vagueness1255 – as exemplified by the “disappearing chair” problem (atom-wise annihilation of the chair … just when does it cease to be?) – is that there never were any chairs, just our concept of a chair and atoms arranged chair-wise. We sit on the atoms, not on the concept, but we describe the atom-heap as a chair. But this concept is vague, or there is a family resemblance, so sometimes it’s not clear whether it applies or not.
      2. This may possibly be satisfactory for Artifacts1256, but the big question is whether natural kind1257 objects exist independently of our conceptual schemes. Certainly they do as atom-heaps, but it is unclear whether they do as answers to our concepts. So, various atom-heaps carry on existing1258, but whether our concepts carry on applying is vague.
      3. Others (eg. Peter Van Inwagen) take the view that only mereological simples and organisms exist, which seems to be a similar view: nothing answers to our concept if it is not of an organism or a simple. Or, rather, it’s atoms arranged X-wise that answer to our concept of X in these circumstances.
      4. There seems to be something special about natural kind1259 concepts, the persistence1260 of whose exemplars (unlike those of artifact-concepts) don’t in any sense seem to depend on us and our conceptual schemes. Is PERSON1261 a natural kind concept – rather than a qualification of an individual falling under a natural kind concept (such as human animal1262)? If it isn’t, then are we simply left with semantic1263 arguments, which – though logically inconsequential – have profound practical and ethical consequences?
      5. Are the arguments above really saying that artifacts don’t exist? Presumably artifacts depend on us for their existence as artifacts1264, though not as lumps of matter.
      6. Lynne Rudder Baker argues that a new ontological1265 entity (a painting) comes into existence because of the relation of an object (a canvas plus paint appropriately distributed) to an art-world. I need to press Baker here. Are all her analogies truly analogous? Given evolution1266, even species-concepts (paradigms for natural kind1267 concepts) are mobile rather than being eternally fixed. Yet Baker seems to think that it’s a relation to evolutionary history that makes an animal1268 what it is (as distinct, presumably, from atoms arranged animal-wise).
      • Semantics1269
        1. We need to separate those issues in the topic of personal identity that turn on matters of fact, and those that just depend on the meaning of our words. Sometimes, it is not clear which of these options is assumed in any particular case.
        2. For instance, David Wiggins’s view (shared by many others) is that we should use the term Person1270 of individuals1271 who belong to a kind1272 whose typical members have certain capacities.
        3. This will allow us to use the term of individuals who don’t presently possess these capacities – which may be correct in the case of temporary loss of function – but also of those who never have and – most likely – never will possess them.
        4. Then, if we accord certain rights to Persons1273 in this sense, we may act differently to some of those designated Persons1274 than do those who only confer the title Person1275 to those with the appropriate present (or normally-present) capacities.
        5. So, there is a practical difference. But is this difference generated only by confusion over words? If we adopt the “typical members” definition., then might we not then say that not all Persons have the same rights, and introduce a new term “Person1276-Plus” for all of whose exemplars do deserve the rights? This would allow for Degrees of Personhood1277 and, of course, the “typical members” definition may be adopted to resist this slide (as it might be seen).
        6. This will depend on whether Person1278 is a natural kind1279 concept1280, and whether this kind strictly relates to Person or Person-Plus.
        7. My own view is that neither Person nor Person-Plus is a natural-kind concept, but is an honorific or description of properties possessed by exemplars of a true natural-kind concept – Human Animal1281 or Human Being1282.
    2. Fiction1283
      1. This is a rather tangential topic for my Thesis, though fictional characters are (usually) persons1284, so I have to say how I – as an animalist1285 – can account for this given that they are not animals1286. Not particularly hard.
      2. We might also consider what are the persistence conditions1287 of a fictional character. Are there things his creator cannot do to the character without killing him off? Can the character be resurrected? What is the ontological1288 status of a fictional character? In what sense – if any – do they exist1289? What about characters – like Superman – that pass into the public domain? Or – like Dr. Who – that are portrayed as having different characters and bodies across what purports to be a single story-line?
      3. Various Thought Experiments1290 rely on cases from science-fiction, the suspected impossibility of which can undermine their cogency. I discuss such Science-fiction cases later under the head of TEs1291.
      4. Yuval Noah Harari argues that many of our everyday beliefs are “convenient fictions” rather than truths. They help to hold society1292 – and the individuals1293 within it – together.
      5. Myths divide into redundant fantasies and the still-current ways in which we speak of and seek to make sense of the world in ways that go beyond – or against – what can actually be known.
      6. Fictionalism appears as an alternative to realism with respect to mathematics, modality1294 and the past1295 (and probably elsewhere).
  7. Explanation1296
    1. In the Introduction1297 to this Thesis I said that the entire work will be an exercise in inference to the best explanation, so I need to give an account of what an explanation is. The Thesis needs to account for our intuitions1298 in response to the various TEs1299 and other situations and questions that arise, or else explain them away as confused. If there is a universal response, that is – though this isn’t always the case (consider the ‘transplant intuition1300’ that ‘you go with your brain’, denied by card-carrying Animalists, though I suspect they feel the power of the intuition even so).
    2. This is the underlying reason for the methodology I’ve adopted – to try to tease out all the implications of a theory of Personal Identity – because ‘fixing’ a problem in one area may have unintended consequences in other areas. The entire implied ‘world view’ has to hang together as best as possible.
    3. I have certain prejudices as to what an explanation is – a bias towards modern scientific as against Aristotelian forms of explanation, whereby an explanation has to fill in the details of mechanism, hopefully with quantification, rather than be vaguely gesturing.
    4. I need to define and defend this position but, as it’s methodological and somewhat peripheral, without causing too much of a diversion from my main concerns. I can’t get into a full-blown study of the philosophy of science.
    1. Probability1301
      1. I, and probably many others, tend to say that certain propositions are ‘unlikely’ to be true; that they are ‘improbable’.
      2. But, just what does probable mean in this context, given that this “probability” usually cannot be quantified – ie. given a number in the range [0,1]?
      3. In philosophical circles, the philosophy of rational belief closely follows Bayesian principles and conditional probabilities. So, while there is no objective probability for the truth or falsehood of our beliefs, we can supply subjective probabilities and revise these in the light of new evidence.
      4. I really don’t think this topic has much to do with my thesis on the topic of Personal Identity, though I will be on the look-out hereafter. It seems to be more relevant (as far as my own concerns go) in the philosophy of religion in regards to the probabilities of certain beliefs – in miracles and the like. I’ve also written some brief Notes on Pascal’s Wager, which I argue should be rejected.

Concluding Remarks
  1. In our next Chapter1302, we need to consider further the question of Persistence and Time and how they impact on the topic of Personal Identity.
Chapter 5: Persistence and Time1303

Abstract
Chapter Introduction1304
  1. We start off with a discussion of Change1305. In this context we need to consider Causality1306, because this is implicated in which changes are identity-preserving and which not.
  2. Change is usually understood as differing Properties1307 enjoyed by Substances from one time to another. This leads to the problem of Temporary Intrinsics1308, how having inconsistent properties at different times doesn’t violate Leibniz’s Law. However, there’s an alternative account – Haecceity1309 – which claims that substances persist irrespective of change of properties.
  3. Before we can discuss Persistence1310 as such, we need to have a view of the temporal ‘medium’ in which change takes place. The philosophy of Time1311 is highly complex, and I need only touch on it insofar as it affects my choice of theory of Persistence. It appears, however, that the possibility of Time Travel1312 – assuming there is such a possibility – has some implications for our theories of Personal Identity.
  4. When we consider the circumstances under which a Person, Human Animal, or anything else can be said to persist, we need to consider not just actual cases – situations which the individual has undergone – but possible cases, ones that it might undergo. This brings in Modality1313, especially when we get on to the more exotic Thought Experiments, when the various sorts of Possibility need to be taken into account.
  5. Now we get to the meat of the Chapter as we consider just what Persistence Criteria1314 are, and review what alternatives have been suggested.
  6. Whatever else Persistence Criteria involve, we know that Continuity1315 of some sort is key. We covered Psychological Continuity in Chapter 1. In the context of Animalism, Physical Continuity1316 is of more relevance. We need to distinguish Continuity from Connectedness1317, as there’s a tension between the two.
  7. However – in the case of Artifacts at least – Continuity and Connectedness are, superficially at least, not required in the case of disassembly and reassembly. Can this Intermittent Existence1318 apply to Human Animals to allow for Resurrection? Does Intermittent Existence make sense?
  8. We now need to consider whether the standard view of Persistence – Endurantism1319 – where the individual is considered to be wholly present at a time – is correct, or whether we should consider a space-time worm view – either Perdurantism1320 or Exdurantism1321.
  9. The above is relevant because, depending on our approach to time and persistence, some of the troubling thought experiments that worry us about the persistence of human persons that feature in Chapter 10 are resolved, because the reduplication objections fail. However, we get nothing for nothing. As is usual in philosophy, a gain here is compensated for by a loss somewhere else. We need to determine these losses and agree that they are “worth it”.
  10. Finally, we will consider whether matters of Identity really matter. Derek Parfit claims that “Identity is not what matters in survival”. In making this claim, he introduces the term Survival1322, which – as far as I can tell – is not the same as Persistence, since the latter necessarily involves Identity, whereas the former does not. Parfit had a rather impersonal view on What Matters1323, which was more prescriptive than descriptive: we should be happy if our pet projects carry on, even if not with us at the helm.

Main Text
  1. Change1324
    1. Change is one of the central problems that questions of identity address. Just what changes can an object undergo while remaining the same thing?
    2. If an individual thing1325 is to Persist1326, this is in the face of Change – either (in the absence of Essentialism1327) to its Parts1328 – by losing or gaining some – or to its Properties1329, the problem of Temporary Intrinsics1330.
    3. As is indicated above, the changes that can affect the persistence of an Individual are intrinsic to it. Extrinsic (relational) property changes do not affect persistence, being ‘mere Cambridge Changes’. Or so is the orthodox position, but might have been disputed by Lynne Rudder Baker1331. For example, if the art-world changes its mind about a urinal being a work of art, is there an ontological1332 change?
    4. Just two further things for now.
      1. Firstly, if I understand things aright, change is something that happens to substances1333, and the question of identity is whether or not that substance remains the same substance after some change. Change is not relevant (or at least persistence through change isn’t relevant) under (at least) a couple of philosophical positions:-
        1. If we adopt a mereological1334 essentialist1335 position, whereby the things that exist are regions of space-time and their contents. This turn of phrase may sound too much like the “generous ontology1336”, which answers the question “what exists” as “any region of spacetime, and whatever is in it”, which includes all sorts of spatio-temporally gerrymandered objects. Here, I refer only to objects as are ordinarily taken to exist, like dogs and tennis balls, but with the restriction that they have all their parts essentially, and cease to exist when they lose a part. Then, a thing just is a collection of particles, and if one of these is lost or destroyed, then so is the thing. This leads to the denial that there are any ordinary things, like chairs or animals, as they are always losing and gaining parts, and so only exist as the same thing momentarily.
        2. If we adopt a perdurantist1337 account of persistence, the things that exist are space-time worms. A thing is not wholly present at a time, only its temporal stage is. The thing as a whole exists timelessly. Does the thing therefore change? Maybe not, but questions of persistence still apply, though maybe only pragmatically. Just what aggregate of stages are usefully described as a persisting thing? A four-dimensional naturalist might insist that exemplars of natural kinds – particularly organisms – have a greater claim to existence than arbitrary assemblages of stages.
      2. A second important matter is that (on many accounts) it is the rate of change that is critical. Everyone seems to agree that you cannot just swap out all the parts of a thing at the same time and claim that you have the same thing, whereas the assumption is that a thing can persist through change (pace the views in the bullet above) provided the changes occur slowly enough and piecemeal enough. After all, organisms1338 replace all their parts over time (it is said) yet remain the same organism (ditto). It strikes me that there’s a degree of vagueness1339 about how quickly the changes can take place without violating the persistence conditions of the object. Also, in the case of organisms, historically it has been supposed that the changes would take place naturally, but transplant1340 surgery allows unnatural change. The transplanted organ will either by assimilated or rejected by the organism. If it is assimilated, especially if it’s hidden from view, we don’t feel any qualms about saying that is has become part of the organism, which has persisted through the change. I suppose we’d also get used to the successful transplantation of visible parts, like limbs. Things get difficult with heads, in deciding what has been transplanted onto what – the head or the body – and therefore what has persisted through the change. Maybe it’s a case of Fusion1341.
    1. Causality1342
      1. Causality (or Causation) is important in determining which changes1343 are identity-preserving and which aren’t. There has – it is said – to be the right kind of causal connection between A and B for A=B. This is sometimes given as an objection to Teletransportation1344 TEs1345 – the causal connection between the pre- and post-teletransportation individuals isn’t of the right kind for identity-preservation.
      2. Similar objections are sometimes raised in response to tinkering with organisms – for instance siliconisation1346, brain transplants1347 and such like. The causal connection between successive states of the supposed same organism isn’t sufficient to preserve identity.
      3. Also, memories1348 sometimes feature. Fiddling with or implanting memories doesn’t have the right causal connection between the events they are supposed to be of – on the one hand – and me – on the other – to make them my memories, even though they might seem so to me.
      4. In all cases, we need to consider just what it is that preserving the right sort of causality effects. An important idea in this regard is internal change versus externally-imposed change, and why some externally-imposed changes preserve the individual, while others don’t. See in particular "Olson (Eric) - Immanent Causation and Life After Death".
    2. Properties1349
      1. Properties are relevant to the topic of Personal Identity because it is the possession of incompatible properties at different times that is the explanation of change1350. And, the key question in Personal Identity – other than what we are1351 – is what changes we can undergo and still persist1352.
      2. Consequently, the problem of Temporary Intrinsics1353, which are intrinsic (ie. non-relational) properties that are “just had” by a persisting object at some time(s) but not others, is central to the explanation of change, and to the decision whether Endurantism1354, Perdurantism1355 or Exdurantism1356 is the better account of persistence.
      3. This topic also relates to that of Universals1357, which is what realists claim properties to be.
      4. Properties are usually said to be had by substances1358, so seem to depend on a substance metaphysics. Presumably they can be had by processes in a process metaphysics1359?
      5. Lynne Rudder Baker’s Constitution View1360 makes a great play on her distinction between having properties derivatively and having them essentially; the constituted1361 thing can have some properties derived from the constituting object, and others on its own account.
      6. So, says Baker1362, a person’s weight is derived from the weight of her body while her status as “employed” is had essentially. Maybe another example is clearer, as it doesn’t involve the contentious claim that persons are separable from human animals: a statue has its value essentially but its weight derivatively. The value of the constituting matter will usually differ from – and be less than – that of the statue.
      7. Note that there’s a distinction between two contrasts – between Intrinsic and Extrinsic properties and those held Derivatively and Essentially. The two contrasts don’t map onto one another. Value may be essential, but it is not intrinsic – unlike mass – as it depends on evaluation by an art-world. Awkwardly, weight – rather than mass – is an extrinsic property, depending as it does on the local presence of a massive gravitating body.
      • Temporary Intrinsics1363
        1. A “temporary intrinsic” is an intrinsic – non-relational – property1364 had by an individual1365 or object at one time but not at others. This situation is constitutive of change1366.
        2. The “problem of temporary intrinsics” is the problem of how to explain that the very same thing can have different properties at different times, in seeming contradiction of Leibniz’s Law1367, that identicals must have all their properties1368 in common.
        3. An example – due to my friend Sophie Botros – is of a leaf that is green in the spring and brown in the autumn. She points out the tension, and claims that identity is an “atemporal relation”, but in so doing has to give up on the common-sense intuition that some things persist1369 through some changes without leading to a logical contradiction.
        4. "Kurtz (Roxanne) - Introduction to Persistence: What’s the Problem?" is a good place to start on this topic. Kurtz points out the tensions that arise when the three “non-negotiable theses” alluded to above are held simultaneously, namely Non-contradiction, Change1370 and Persistence1371.
        5. This topic is entwined with those linked to above and listed below.
    3. Thisness (Haecceity)1372
      1. Haecceity – or Primitive Thisness – is an idea in the logic of identity1373 that allows for an individual thing to be that thing irrespective of its properties. It’s the ultimate expression of the “pin cushion” model of substances1374 (with the pins being properties1375).
      2. It’s in tension with Leibniz’s1376 rather dubious “law of the identity of indiscernibles”. I think it arises in the “universe with only two spheres” TE1377, which have all the same properties – both intrinsic and relational – yet are intuitively distinct. Haecceity explains why (it may be said).
      3. If haecceity is allowed, then there are no essential properties, and certain dubious forms of metamorphosis1378 – for instance – are allowed.
      4. So, while animalism1379 says that we are essentially human animals, haecceity would (I presume) allow us to be transformed (if gradually) into transhumans1380, via cyborgisation1381 - or maybe even to be converted into androids1382. It would also allow the replacement of our brains1383 by siliconisation1384 to be identity-preserving (both our identity, and that of our brains).
      5. I’m dubious about both claims, but a strict animalist would accept the former – as my brain is “just another organ”, replacing it with another – but functionally equivalent – organ with which it is non-identical would not affect the identity of the animal any more than an artificial heart would.
  2. Time1385
    1. I don’t think I need to wade too deeply in the topic of time for the purposes of my thesis, dealing as it does with the dispute between Animalism1386 and the Constitution View1387 and the possibilities of Transhumanism1388 and post-mortem survival1389, but it’s clearly central to the topic of diachronic identity, ie. identity over time. It’s also an interesting and important topic in its own right, one on which every metaphysician needs to have a worked-out position.
    2. Aspects of particular interest include:-
      1. The Endurantism1390, Exdurantism1391, Perdurantism1392 debate. Perdurantism may solve the identity-related problems of fission1393, at least according to Lewis1394.
      2. The claim that Presentist theories of time seem to undermine non-endurantist theories of persistence, though this is disputed.
      3. Parfit1395’s contention that we should discount the concern we owe to our future selves proportionate to our likely lack of psychological connection.
      4. Time Travel1396: maybe surprisingly, this alleged possibility appears in various TEs1397 on Fission1398.
    3. Theories of Time: This is not yet the place to expatiate on these. Enough to note what they are:-
      1. Presentism:
      2. Eternalism:
      3. Growing Block:
      4. Moving Spotlight:
    4. Red Lines: There are certain things required of any theory of time, and certain boundaries that cannot be crossed:-
      1. Science: Any philosophical theory of time must take account of the best science of the day1399.
      2. The past is fixed: While it may be possible retrospectively to change the truth-value of statements made in the past, or the importance of actions in the light of the then future, it is not possible to change what actually happened. Also, what happened in the past is not dependant on our present evidence.
    5. A Rant!1400
      1. While – as I asserted above - any philosophy of time needs to be informed by the best science of the day1401, there are issues with tying it too closely to physics, in that there is not currently – and may never be – a complete and unified physical theory of the universe. Any theory only seeks to model part of reality and there are conflicts at the edges between these theories and much current disagreement about the unification of the various partial theories into a Grand Unified Theory.
      2. There are doubts about the metaphysical implications of any partial theory, since it is only an approximation to the truth that makes accurate predictions in a wider or narrower – but not universal – domain.
      3. But again, that said, ignoring physics entirely and relying on common sense is also a mistake. Often “common sense” is just the physics of the past and is based on theories even more partial than the current ones.
      4. I suspect that the common-sense idea of “the present” is that which Newton relied on in his dynamical theories, where a single universal time is posited. Newtonian dynamics is very useful and is good enough in the everyday scenarios, as everyone knows, but falls short for speeds approaching that of light, or close to massive gravitating bodies, both of which can slow the passage of time.
      5. Much of modern physics deals with domains where common sense is not only of little use, but is a hindrance. It’s not really possible to make “common sense” of quantum indeterminacy or the distortion of spacetime by gravitating bodies. So, I have my doubts about any philosophy of time based on armchair thoughts about people walking across rooms.
      6. However, there’s no simple answer to the metaphysics of time. There are philosophers who are well informed of modern physics who are presentists. However, one must be careful not to cherry-pick those philosopher-scientist that can be taken to agree with you, such as Lee Smolin, while ignoring the consensus, if there is one.
      7. I’m aware that there’s a suggestion that disagreements about time are purely verbal. If the past (or the future) exists, it doesn’t exist in the same way as the present, in that it is inaccessible. However, it’s a travesty to say that the past – if it still exists – is “still happening” somewhere. No doubt the idea is that – viewed in some sort of hypertime – it could be “re-played” on request.
      8. What concerns us all, I submit, is that the past – in the sense of what has happened – ought to be immutable. The import of what has happened, and the truth-value of certain statements1402 – may be changed by future events, but not the happening itself. Now this is common sense, and maybe some future physics will undermine it, but some of the “paradoxes” of time travel seem to be contradictions.
      9. What I don’t think we should do is confound epistemology with metaphysics. The Logical Positivists – like Hume1403 earlier – had many sensible things to say about consigning armchair metaphysics to the flames. Anything that relies neither on “quantity” or experience is highly suspect if it makes claims about the world. But, there can be truths that we can never know. There is – I submit – a fact of the matter about what if anything Caesar had for breakfast on the Ides of March, though we can most likely never know what it was. I’m not sure there’s any support for “unknowable truths” from quantum mechanics, however. There are pairs of quantities that cannot both be known exactly, but it’s not clear that there’s a fact of the matter of which we’re necessarily ignorant, or whether there’s no fact of the matter at all. Common sense doesn’t help here.
      10. There’s a distinction between what it is rational to believe, and what is true. It’s rational, and maybe obligatory, for non-physicists to go along with the consensus of whatever is said by mainstream physics, even though this is suspected of being incomplete and many claims may turn out to be false. But the statements when true aren’t made true by the fact that consensus physics makes them.
      11. By analogy, it’s rational, though maybe less obligatory, to go along with the consensus account of historical events, though maybe not as obligatory as history is more generally accessible than physics, and detailed assessment of the evidence and historical reconstruction is less difficult for the non-specialist.
      12. However, there’s a contrast between what makes statements about the current world true and those of the past. The present world is open to inspection, so – roughly – the truth-makers are those of empirical investigation. With respect to the past, some truth-makers will be empirically-derived theory (if we can wind the laws of physics backwards, we can know what must have happened in the past), but what if there is no such relevant theory?
      13. In such a case, the evidence that justifies rational belief in statements about the past may indeed well be the theories and evidences of the best-qualified historians – given that as a matter of empirical fact, modern historians – at least in the liberal West – are an honest and conscientious bunch. But their conscientiousness and evidence is not what makes their statements true – only making it rational for us to believe them. What makes them true is whether they happened as described (subject to interpretive caveats).
      14. What we need to know is what would be the case if – as in the dystopia of 1984 – the job of the Ministry of Truth is to destroy the evidence down the memory holes. Orwell presumably believes that this is a reductio ad absurdum of the view that the truth-makers of statements about the past are restricted to present evidence. Winston Smith knows that there’s a concerted attempt to destroy evidence because it’s his job to do it, but the reason he’s concerned is that his memories tell him that the attempt fails to actually change the past, and he doesn’t accept double-think as a way out.
      15. So, I think we end up with the truth-makers of true statements about the past – in default of anything else – being the past itself. If this requires that the past exists in some sense, then I suppose it does, but it’s open to metaphysicians to think up some other scheme. But relying on “present evidence” as a truth-maker is absurd, as the availability or quality of evidence is open to malign influence, or to simple chance events.
      16. Getting back to Caesar’s breakfast, while we may never know, there’s a fact of the matter, just as there’s a fact of the matter about what I had for breakfast 3 years ago today, though I’ve no evidence or memory of what it was. To deny this is to deny a very strong intuition1404.
    1. Time Travel1405
      1. From the perspective of Personal Identity, Time Travel enters into various Thought Experiments1406.
      2. Time Travel is sometimes taken as a knock-down argument against Endurantism1407, because if you travel back in time to talk to your former self, it doesn’t look as though you can be wholly present at a particular time, as different “time slices” of “you” are located in different places at the same time.
      3. Perdurantism1408 isn’t worried by this TE, though it would seem to make the topology of the spacetime worms rather complex (and scattered).
  3. Modality1409
    1. Modality – the logic of possibility and necessity – is important to my thesis because discussions of Personal Identity often range over merely possible – rather than actual – events that an individual1410 might encounter and which might call that individual’s continued existence into doubt.
    2. This is particularly the case with the numerous popular thought experiments1411 (TEs), one of which – Teletransportation1412 – has a reference to this topic (the bungled duplication1413 case and what this has to say about the standard singular case).
    3. Modality also features in the arguments over the logic of identity1414 – in particular the standard view that Identity is a necessary relation, contra the heretical positions.
    4. "Sturgeon (Scott) - Zombies and Ghosts" has a useful categorisation of types of modality, and their relation to conceivability and genuine possibility.
  4. Persistence1415
    1. Persistence is the continuing in existence of one thing from one time to another.
    2. Different kinds1416 of thing have different kinds of persistence criteria1417.
    3. My interest is in the persistence of Persons1418, or at least of beings such as Us; consequently I need to know what kind of thing we are1419.
    4. Whatever I have to say is covered by the topics below.
    1. Persistence Criteria1420
      1. There’s a distinction between persistence criteria and persistence conditions, both of which topics will – eventually – be covered here.
      2. Maybe the former term (“criteria”) focuses on epistemology (how we know that something has persisted) and the latter (“conditions”) on metaphysics (what it takes for something to persist).
      3. I suspect David Shoemaker – in "Shoemaker (David) - Personal Identity and Immortality" – of confusing the two (despite his explicit acknowledgement of the distinction) in his rejection of the soul criterion.
      4. In brief, the persistence conditions for an object of a particular kind1421 are the necessary and sufficient conditions for it persist1422, that is, to continue in existence1423.
      5. With respect to our1424 persistence criteria, David Shoemaker considers the following possibilities:-
        1. Soul Criterion1425
        2. Body Criterion1426
        3. Memory Criterion1427
        4. Brain1428-based Memory Criterion
        5. Psychological Criterion1429
        6. Biological Criterion1430
      6. In this regard,
        1. The first four feature in "Shoemaker (David) - Personal Identity and Immortality".
        2. The final two in "Shoemaker (David) - Personal Identity, Rational Anticipation, and Self-Concern".
      7. In "Shoemaker (David) - Personal Identity and Self-Regarding Ethics - Alternative Approaches" Shoemaker considers two other alternatives:-
        1. Narrative Identity1431, and
        2. Identity Doesn’t Matter1432.
      8. Most of my work on the topic of persistence conditions and criteria will be undertaken under the guise of pursuing the topics above.
    2. Continuity1433
      1. Continuity is one of the principle factors taken into account when determining or deciding whether an object of whatever sort1434 has survived1435 some change1436.
      2. “Spatio-temporal” continuity is usually what is intended, though this might be deemed to beg the question against certain forms of the Psychological View1437 of Personal Identity where the continuity required is psychological: while this continuity is temporal, it’s not obviously spatial unless psychology is dependent on something physical (the brain1438), something denied by substance dualists1439.
      3. To be identity-preserving, the change must not be too radical or too swift: both of these break the continuity requirement.
      4. In particular, it is usually held that
        1. An object cannot survive the loss of one of its essential properties1440. If this loss involves continuous change, we may encounter a sorites1441 paradox.
        2. Nor can the object change too many of its parts at once, though some things may change all of their parts over time provided change is gradual.
        3. Nor can it change sortal1442, which makes radical metamorphosis1443 impossible.
      5. In all of the above cases there is deemed to be insufficient continuity between successive stages of a thing to allow for its persistence1444.
      6. I don’t think in the above that “gradual” means “slowly”, though this will usually be the case. What is needed is for there to be many intermediate steps to allow continuity. Each change involved in each of the steps has to be “minor”. All this is somewhat vague1445.
      • Physical Continuity1446
        1. In addition to considering just what causal1447 conditions a physical object needs to satisfy in order to persist1448, I need to consider continuity and contiguity requirements.
          1. It is not normally supposed that a physical object can continue to exist if it ceases to be a contiguous whole – if its parts become spatially scattered.
          2. Nor does it persist if there is no continuous spacetime path between the location of the object at one time and the location of its supposed continuant at another.
        2. These requirements raise a couple of issues:
          1. Intermittent Objects1449: can things go in and out of existence? Does the disassembled bicycle still exist1450 in a dispersed state?
          2. Mereology1451: is the content of any region of spacetime – whether spatially or temporally contiguous or disconnected – a thing?
        3. What do decisions here have to say about the possibility of resurrection or reincarnation? Is a physicalist1452 able, even in principle, to allow the possibility of disembodied existence1453, resurrection1454 or reincarnation1455, given the need for a continuing physical substance1456 to which the individual is identical? This is an especially pressing issue for animalists1457.
        4. Some Christians are physicalists1458, and Peter Van Inwagen has (as a wild speculation - see "Van Inwagen (Peter) - The Possibility of Resurrection") God miraculously swapping out and preserving our corpses so he can resurrect the same individuals in due course.
        5. Failure of physical contiguity for an individual arises in cases such as that imagined in "Dennett (Daniel) - Where Am I?".
        6. Another case in point is that of Teletransportation1459.
        7. I need to consider (but expect to reject) such suggestions that beings such as we1460 can survive such radical physical discontinuity.
      • Connectedness vs Continuity1461
        1. When defining persistence conditions1462, we need to distinguish between connectedness and continuity.
          1. Continuity is a transitive relation that relates adjacent stages.
          2. Connectedness is intransitive and requires enough of the properties of interest to be maintained over time.
        2. At root, this is just the message of the Old Soldier, raised against Locke1463, and answered by Ancestrals of the “remembers” relation.
        3. Indeed, "Johnston (Mark) - Human Beings" describes Continuity as the ancestral of Connectedness.
        4. Persons1464 – like animals1465 – develop and “grow” (not necessarily physically – that would be begging the question as to what persons are). We can admit that we have the same animal from fetus1466 to corpse1467 (with some arguments about the termini). However, do we have the same person?
        5. I’d contend that whatever physical and psychological discontinuities1468 the human animal undergoes, we do have the same person where we have a person at all, provided a single First Person Perspective1469 (FPP) is maintained.
        6. If one’s character changes radically over time, do you remain the same person? Yes, if we want the child and the adult to be the same person (as we do), or the convert to be the same person as the unbeliever.
        7. The relevance of this to the present debate is that it is continuity that is relevant to personal identity, and not connectedness. This applies whatever view of Personal Identity we hold.
        8. Derek Parfit – who doesn’t think identity is what matters1470 – holds a different view; that it is connectedness that matters, and so we need have no concern for future selves1471 that are psychologically unconnected to our current selves. I think this view is mistaken, as we are locked in to a First Person Perspective1472 and will have to experience the fate of that future self, however unconnected.
      • Intermittent Objects1473
        1. Artifacts1474
          • Are the classic cases of possibly intermediate objects, in that the same object can be disassembled and then reassembled, and it is usually thought that the reassembled object is numerically identical to the original.
          • But it is not clear whether the watch (say) ceases to exist when disassembled for cleaning, or whether it continues to exist in a scattered1475 state. The recipient of a bag of watch-parts would still consider they had received their watch back, even if annoyed at having to reassemble it themselves.
          • But, as with all things artifactual, there’s a question whether our intuitions are conventional, and could be otherwise. My gut-feel, however, is that disassembled artifacts just exist in a disassembled, scattered state, rather than ceasing to exist. Hence, disassembled artifacts are examples of scattered objects1476 rather than of intermittent objects.
          • I suppose the counter-argument might be that artifacts are the things they are for functional reasons, but does a disassembled thing have a function (or, at any rate, the same function it had when assembled)? I imagine we could say that an object might be delivered in kit-form, and then assembled, and it is probably arbitrary (or can be stipulated) whether the kit is of the same kind as the object or not.
          • The Write-up1477 of "Carter (William) - Artifacts of Theseus: Fact and Fission" will cover all this in more detail.
        2. Persons1478
          • When it comes to Persons, it’s the possession of certain capacities, not the present exercise of them, that qualifies an individual as a person.
          • David Wiggins holds the view that a person is one who belongs to a kind whose typical members possess some open-ended list of properties.
          • In that case, a foetus or someone in a PVS1479 would still be a person. They would not “intermit” while in that state.
          • However, on a “present capacity” view, they would not qualify as persons in such a state, and a person might have intermittent existence. For instance, if I were to fall into, and then recover from, a PVS I would not be a person when in the PVS, but would on recovery again be a person, and (importantly) the same person.
          • So, someone like Baker1480 might be committed to persons as intermittent objects because she thinks of human persons as ontologically separate from the human animals that constitute them.
          • However, an animalist like Olson1481 would not be so committed. For the animalist, it’s the animal that’s the persisting thing, and the animal persists throughout the PVS.
          • I’m not sure what Olson’s view is of the ontological status of persons (I don’t think he considers them a kind); they are just individuals of another kind (most notably human animals) with special, maybe temporary, properties.
        3. Phase Sortals1482
          • My view is that human persons are phase1483 sortals1484 of human animals.
          • So, I side with Olson against Baker in the controversy about what Persons are.
          • While persons are ontologically significant, this does not bring into being a new kind of PERSON, but raises the status of the kind whose typical members are persons (and of the individuals who are persons, of course).
          • So, I do not think that persons – at least persons falling under the kind HUMAN ANIMAL – can have intermittent existence. A fetus or a human animal in a PVS remains the same human animal.
        4. Constitution1485
        5. Scattered Objects1491
          • The topic of physical continuity1492 addresses – amongst much else – both scattered objects1493 and intermittent objects, the former intermitting in space, the latter in time (and maybe in space as well).
          • So, if persons are things constituted by other things, then the person intermits during a PVS, but there is no physical discontinuity.
          • But, as Baker believes, the very same person can be constituted by different bodies at different times, then there must necessarily be persistence in the absence of spatio-temporal continuity, which it usually taken as a necessary, if not sufficient, condition for persistence.
          • This leads on to our next topic.
        6. Resurrection1494
          • The possibility of Resurrection1495 is the main reason for my interest in intermittent objects.
          • Clearly, if we are to claim that the very same individual who died is resurrected somewhere else (maybe not a place as such, though it is difficult to envisage bodies that are not at places) at some other time (or not in time – but similar worries apply) then we have an intermittent object.
          • This process (or fiat) would also seem to involve some sort of metamorphosis1496, though maybe the Constitution View does not worry about such things, as it is the constituted person that persists, not the constituting body.
    3. Theories of Persistence
      • Endurantism1497
        1. Endurantism is the traditional account of persistence1498, that doesn’t invoke the metaphysics of temporal parts. What follows is a modified version of a write-up1499 of the relevant section of "Kurtz (Roxanne) - Introduction to Persistence: What’s the Problem?".
        2. Kurtz introduces the acronym MET for Metaphysics of Enduring Things. The contrasting acronym is MTP for Metaphysics of Temporal Parts. These Temporal Parts exist only instantaneously, and are otherwise known as Stages or Time-Slices. A duck – according to MTP – is wholly or partly constituted by temporal parts. It seems odd to think of a duck as being wholly constituted by a single temporal part, but this just is the exdurantist1500 claim.
        3. There are two forms of MTP – Perdurantism1501 and Exdurantism1502 – and (says Kurtz) their motivation – and that of MTP itself – comes from how well either of these accounts for persistence. I had thought the motivation came from the need to explain conundrums like Fission1503, but it seems there are philosophical difficulties with MET (the problem of Temporary Intrinsics1504).
        4. Kurtz sees three ‘non-negotiable theses’ in accounting for persistence. These are:-
          1. Consistency: the same thing cannot have incompatible properties. Follows either from the law of non-contradiction or from Leibniz’s Law.
          2. Change: Change involves incompatible properties.
          3. Persistence: Objects persist through change.
        5. Perdurantism and Exdurantism share a metaphysics of temporal parts, which Endurantism claims ordinary things lack. Each maintains the tension between the three ‘non-negotiable theses’ given above by sacrificing at least one “intuitively and philosophically appealing” metaphysical claim on persistence. Kurtz sees this as the “real problem of persistence”.
        6. According to MET, at least some objects endure – a numerically self-identical object is wholly present at different times.
        7. For both MTP and MET, objects may have temporal parts. So, the existence of stages or a space-time worm is not denied by MET.
        8. Neither a space-time worm nor a stage is an enduring thing, as neither is wholly present at different times. Nevertheless, says Kurtz, “MET does not entail the claim that ordinary objects lack temporal parts”. This sounds wrong as far as ordinary objects are concerned – I need to check what the endurantists say on this. Though the worm is not an “ordinary thing”, but (presumably) a collection of momentary stages, which are themselves not ordinary things.
        9. Endurantists claim that ordinary objects persist by enduring, that is, that identity over time is strict identity between objects wholly present at different times. Change is the holding of incompatible properties by objects identical over time. So far seems to be common sense.
        10. I need to put the following comment somewhere, so here goes:
          1. I had the impression that MET goes along with Substances1505, while MTP does not.
          2. I need to see what "Wiggins (David) - Sameness and Substance Renewed" has to say.
          3. I note that SUBSTANCE is not mentioned once by Kurtz in her Introduction.
        11. To avoid the contradiction of an object having incompatible properties, endurantists adopt temporally mediated property instantiation, whereby temporal facts (whether of time or tense) external to the object mediate the instantiation of incompatible properties without an appeal to temporal parts. Thus, an ordinary object persists through change and both alters and survives. What has to be given up is the “just having” of properties. The question seems to be how important the having of properties only mediated by internal facts is.
        12. There are various implementations of endurantism. Those in "Haslanger (Sally) & Kurtz (Roxanne), Eds. - Persistence : Contemporary Readings" are as below, though presumably, these chapters present, but don’t necessarily support, endurantism:-
          → "Van Inwagen (Peter) - Four-Dimensional Objects",
          → "Mellor (D.H.) - Selections from 'Real Time'",
          → "Hinchliff (Mark) - The Puzzle of Change", and
          → "Markosian (Ned) - A Defense of Presentism".
        13. Kurtz thinks that the introduction of time or tense into property instantiation creates four potential problems. I’m not hugely convinced by these – presumably for MET only – and Kurtz admits she’s only gestured at them to get them on the table:-
          1. She thinks it irrelevant what the time is to whether an object has an intrinsic property or not.
          2. Issues like Bradley’s Regress (to be discussed under the head of Temporary Intrinsics1506) threaten our understanding of how a property can be predicated of an object at all.
          3. Indexing properties to times makes them seem like different properties, and so gets rid of the prima facie problem of inconsistent properties too easily. And, if they are different properties it (to my mind) obscures what makes Red-at-T1 and Red-at-T2 both instances of Red.
          4. Given the definition of change, then if the properties aren’t incompatible, why do we have change at all?
      • Perdurantism1507
        1. As developed by W.V. Quine, David Lewis, Ted Sider and others, Perdurance – otherwise known as Four-Dimensionalism (4-D) – is to be contrasted with Endurance1508 and Exdurance1509.
        2. I will take "Sider (Ted) - Four-dimensionalism: An Ontology of Persistence and Time" as my primary text, though "Kurtz (Roxanne) - Introduction to Persistence: What’s the Problem?", the introduction to "Haslanger (Sally) & Kurtz (Roxanne), Eds. - Persistence : Contemporary Readings", provides a good overview of these matters.
        3. The logical problems with 4-D need to be carefully considered and, for good or ill, the four-dimensional approach has the advantage – or maybe disadvantage – of undermining the reduplication objection1510 to identity1511 being maintained in certain fission1512 thought experiments1513.
        4. Does 4-D imply fatalism1514? According to perdurantism, a thing is a 4-D object, but not only do we not know the future, but the future may not even exist.
        5. How does this tie in with Lewis’s realism about possible worlds? Maybe if possible worlds are real, all possible futures are real as well.
        6. Note that perdurantism is inimical to a high view of substance1515. A temporal worm cannot change, it just is. The purpose of positing substances is as the enduring things that change1516.
        7. Perdurance also impacts on Leibniz’s Law, where property exemplification is usually taken to be relative to a time.
        8. Look at the adverbial defence of endurantism. See "Haslanger (Sally) - Endurance and Temporary Intrinsics" (probably … this is the explicit response to Lewis)
          → "Haslanger (Sally) - Persistence, Change, and Explanation",
          → "Haslanger (Sally) - Persistence Through Time" and
          → "Haslanger (Sally) - Humean Supervenience and Enduring Things"; and
          → "Kurtz (Roxanne) - Introduction to Persistence: What’s the Problem?" in "Haslanger (Sally) & Kurtz (Roxanne), Eds. - Persistence : Contemporary Readings" seems to cover much the same ground).
        9. If perdurantism really is incompatible with a high view of substance1517, then I may not need a chapter on perdurance (though I would have thought that I would need to argue for the incompatibility), and I can thereby ignore perdurantist objections to the cogency of reduplication objections.
        10. I note also that Eric Olson sets perdurance to one side. He assumes that we are concrete substances that “endure through time by being wholly present at different times”. He claims1518 that if this (and a couple of other assumptions) should be false, then there are no substantive metaphysical questions of our identity over time, only semantic ones.
      • Exdurantism1519
        1. What follows is a modified version of a write-up1520 of the relevant section of "Kurtz (Roxanne) - Introduction to Persistence: What’s the Problem?".
        2. Exdurantism is otherwise known as Stage Theory and Kurtz describes it as analogous to identity between possible worlds. Just as an object might have had incompatible properties – and this is cashed out as a counterpart in a possible world having these properties – so a temporal counterpart stage of the object has them. The objects with incompatible properties are, in both cases, non-identical counterparts of one another. So, the exdurantist then contends that change over time is nothing more than an object and its temporal counterpart having incompatible properties and existing at different moments in the actual world.
        3. Exdurantists have it that an object is numerically identical to a single stage, and is wholly present at the moment it exists. In contrast to Perdurance1521, according to Exdurantists, objects persist when they exdure, and exdure by changing over time. An object changes over time, then, when it and a counterpart stage just have incompatible properties. Consequently, an exduring object does not – strictly speaking – survive change1522.
        4. Just Having (a property) is a term of art. To quote Kurtz: an object just has a property1523 if and only if no extrinsic facts are relevant to the truth of the proposition that the object has that property. It is a slightly tricky concept, and "Lewis (David) - Rearrangement of Particles: Reply to Lowe" is invoked, which refers to non-relational changes (the example is of changing your shape by sitting, etc.).
        5. The primary proponents of Exdurance are Ted Sider and Katherine Hawley.
        6. Acording to Exdurance, an object undergoes change1524 when it and a counterpart “just have” incompatible properties. It persists1525 when it changes over time by standing in the counterpart relation to a stage from a different time. As no single thing has incompatible properties (different stages are different objects), Exdurantism satisfies the demands of consistency. Just how is this “Counterpart Relation” cashed out?
        7. Exdurantism has the advantage over Perdurantism1526 in that it’s the object itself that “just has” its properties1527, rather than a (temporal) part of the object. However, just like Perdurantism1528, Exdurantism rules out change1529 as is commonly understood. In both cases, it’s just different stages that have the incompatible property, not one and the same whole object.
        8. But, Exdurantism does much worse over survival, in that an exduring object doesn’t survive1530, as the different stages are different objects. At best, an exduring object “continues1531,1532” in some way, but the momentary stages are no more identical than are links in a chain.
  5. Does Identity Matter?
    1. Survival1533
      1. Just what does ‘survival’ mean in philosophical contexts? Is it no more than a sloppy locution when ‘persistence1534’ is intended, or is it a lesser relation?
      2. The term found its way into the philosophical literature in Derek Parfit’s expressions “identity is not what matters in survival”. Unfortunately, this expression is ambiguous, and is not clarified by being often repeated. It could mean one of:-
        1. When we survive – that is persist through – some adventure, what matters to us isn’t self-identity as such, but the continuation of our projects, relationships and other things that matter to us. However, of course, we need to persist in order for all these things to be ours.
        2. We can survive some adventure without persisting. That is, without being identical to the person who emerges from the adventure.
      3. We need to distinguish these two possible interpretations of Parfit1535 according to whether survival is or is not identity-preserving. By “survival” does Parfit mean the same as other philosophers mean by “persistence1536”?
      4. Some philosophers (eg. E.J. Borowski) claim that Parfit thinks that “survival is a matter of degree” (implying, it would seem, Partial Identity1537) or that (eg. Frederick Doepke) “survival is one to many”.
      5. In the standard Parfitian claim that “what matters in survival is not identity”, Parfit is right that the issue isn’t necessarily “am I (A) identical to B or C”, but “will I have what matters1538 in survival if B, or C, or both survive”, and that the reason the two questions are elided is that they don’t usually come apart.
      6. However, there’s incoherence in an expression such as “will I survive as B”, if I’m not supposed identical to B, since survival and this use of the personal pronoun seem to imply identity. That is, if Relative Identity1539 is incoherent, as I believe it to be.
      7. Also in an expression such as “will I have what matters”, to what does the “I1540” refer if I’m assumed not to persist? To my present self1541 only? I might now see that I would be happy that a certain future state of affairs, not involving me, appertains; but I would not then have what matters, nor indeed have anything at all.
      8. So, I think a temporal1542 element fits in. Looking forward to some future contingency, we might say that the state of affairs then – in the future – gives me now much of what I want (now) to be the case. My plans will have gone well, my family is in a good state, I am famous or whatever it is that matters to me now. But at that future time I will have nothing that matters, because I won’t exist.
      9. I note that – in "Bourget (David) & Chalmers (David) - The PhilPapers Surveys: What Do Philosophers Believe?" – Parfit says that – in the teletransportation1543 case – he would not survive, but would have what mattered to him in survival. So, I take the “what matters in survival” to mean – for Parfit – what would have mattered had he survived.
      10. So, I think we can indeed distinguish, with Parfit, identity1544 from what matters in survival1545. His idea seems to be that we can have what matters in survival1546 without surviving.
      11. Parfit’s concerns are fundamentally ethical, with Buddhist1547 tendencies. He’s trying to remove self1548 from ethics and persuade us that we don’t need self, and therefore don’t need self-identity.
      12. Parfit’s claim, which I believe to be false, is that we don’t really care about our persistence1549 as such, but about the future success of our projects, which can as well or better be prosecuted by others. But we are more selfish than that, and in many circumstances justifiably so. It may be that some people – saints – could live with this ethic. But most people (entrepreneurs, students and the like) – at least some of the time – make sacrifices now so that they themselves can reap the benefits in the future. If they didn’t have the possibility of this recompense, they might not do what they do, and we might be all worse off. Yes, some people (parents in particular) invest in others and they might well be satisfied if their charges, and not themselves, survived and flourished in the future. But society needs some people to use their own talents initially for their own selfish reasons so that we might all benefit from what they do.
    2. What Matters1550
      1. We need further discussion of Parfit1551’s claims that we can have what matters to us in survival1552 without the need for identity. That is, if the individual who follows on from us experiences good things or fulfils our projects, then provided that individual is sufficiently close to us, or those projects are sufficiently close to ours, we will have what matters to us even if that individual is not – strictly-speaking – us.
      2. The situation envisaged is where the logic of identity1553 – maybe as a result of fission1554 – means that it is logically impossible that we should survive1555 some vicissitude. In those circumstances it’s not mere quibbles over identity that matter to us, but those benefits that are usually concomitant with identity.
      3. It seems obvious that our survival1556 matters to us, or at least some of the benefits of surviving matter to us. If we don’t survive, we can have none of those benefits of survival. Such questions come up in trying to explain why death1557 is bad for the one who dies.
      4. However, the question has been raised that some people (eg. those contemplating suicide) don’t want to persist1558, so persistence doesn’t matter to them. I think it does – persistence matters, though maybe persisting doesn’t. What I mean is that whether they persist or not matters to persons, who can anticipate – in a good or bad light, accurately or not – the future. If things get too bad (or are perceived to be that way), it may be important to them that they don’t persist. In the normal case, it’s important that they do. Either way, persistence matters to them.
      5. Where I differ from (an interpretation of) Parfit is that it’s not just my projects that matter to me. If I had a worthwhile project and I died before completing it – but someone else completed it for me1559 – then – provided it was done competently – that would be a good thing. If this happened to all my outstanding projects, even those I’d not started, that would be better. But it would not be as good as – or even the same thing as – my completing them myself. Sometimes the journey is as good as the arrival, and even where it isn’t it is often an extra good. But if I don’t arrive, I would miss out.

Concluding Remarks
  1. Having now cleared up all our preliminaries, we can now turn to the meat of the Thesis in our next Chapter1560, where we consider Animalism and the arguments for it.
Chapter 6: Animalism and Arguments for It1561

Abstract
Chapter Introduction1563
  1. As we saw in Chapter 02, nothing is more obvious than that we are Human Animals1564. The disadvantages of whole-hearted acceptance of this seemingly obvious fact – leading to ‘conversion’ to Animalism1565 – are at least twofold:-
    1. Firstly, that it seems to demote human beings from their status of being made in the image of the God many – maybe most – people no longer really believe in. There are two responses to this: Either
      1. Deny that it does, or
      2. Accept this claim and agree that the differences between human beings and other animals are those of degree rather than kind.
    2. A second disadvantage is that accepting that we are human animals makes the prospects for post-mortem survival look bleak. This is addressed in Chapter 11.
  2. So, while saying that we are human animals might seem to be the default position – and so the burden is on others to demonstrate that we are not – the historical situation places a burden on the Animalist to present the case for animalism with as much rigour as possible. Saying ‘it’s obvious’ isn’t enough.
  3. Firstly, it needs to be made clear what the claim that ‘we are animals’ – the Biological View1566 – amounts to. The Animalist makes the claim that this is one of numerical identity. We’re not simply animals in the sense of having animal bodies, while ‘really’ being something else. Being members of the species Homo Sapiens1567 is what we really are.
  4. So, our persistence criteria are Biological Criteria1568, and the implications of this need to be spelled out.
  5. Despite the ‘obviousness’ of the Biological View, most contemporary philosophers are unconvinced, as was noted in the first Chapter. I have a Note detailing just which Philosophers can be counted as Animalists1569. Eric Olson1570 was probably responsible for clarifying and popularising the position. I also have a Note on David Wiggins1571, though his status as a card-carrying Animalist is doubted by some, including Olson.
  6. The Biological View is often referred to as the Organism View, so we need to consider what Organisms1572 are, and – indeed – what Life1573 is, including when it starts – Animation1574. I’ve referenced my Note on Quantum Mechanics1575 here as recent research has attempted to implicate it in the mechanism of life. We discuss life’s end – Death – in Chapter 11.
  7. Recently, some philosophers have tried ascribing intentionality to Plants1576, which I think is muddying the waters, just as is trying to include fish in the moral community.
  8. We need to consider Evolution1577, especially as this is a major consideration in why we are animals. I also have Notes on Genetics1578 and Origins1579, which are connected to this subject and others.
  9. After all this ground-clearing, we need to consider Animals1580 themselves – especially those at the higher end of the spectrum most closely related to Homo Sapiens in their abilities and potential moral considerability, leading on to Animal Rights1581.
  10. Finally, we get down to the actual Arguments for Animalism1582, of which Olson’s favourite is the Thinking Animal Argument1583.

Main Text
  1. Animalism1584
    1. There are different interpretations of Animalism, which I need to compare and contrast. My preferred option is Olson1585’s, namely, that animalism is the view that we are identical to human animals1586 and that, since human animals1587 don’t have any psychological properties essentially, neither do we.
    2. Olson is probably the best known active Animalist1588. His two books below need to be analysed in exhaustive detail.
      → "Olson (Eric) - The Human Animal - Personal Identity Without Psychology" and
      → "Olson (Eric) - What are We? A Study of Personal Ontology".
      Follow the above link for other animalists.
    3. Olson’s claim is not that there are no non-animal persons, but that human persons are essentially animals. Other animalists, such as Wiggins1589, insist (or are said to insist, or used to insist) that the only persons are indeed human beings1590, or are (maybe) other animals.
    4. I incline to agree with Olson on the topic of what we are1591, but need to press hard with thought experiments1592 to see why we can’t separate the two – that is, why we can’t separate where we go as persons1593 from where we go as animals: our personhood can’t be pealed off from our animality and ported to some other infrastructure – or at least not while preserving our identity.
    5. There is a distinction between persons and human animals. Is the distinction empirical or conceptual? Why can’t I copy my consciousness1594 onto a machine1595 and that machine be me? There seem to be two issues here.
      1. Firstly, my intuition is that phenomenal consciousness essentially involves a brain-like infrastructure and
      2. Secondly, copying a consciousness onto a machine isn’t identity-preserving, even if possible, but is the creation of a simulacrum1596.
    6. Basically, I reject both functionalism1597 and the idea of consciousness “hopping from one infrastructure to another”. Incidentally, I rather hope we can’t copy our phenomenal consciousness onto a machine, or the possibility of hell on earth unfolds. The nasty business of very extended torment could be delegated to another machine that neither knows nor cares what it is doing.
    7. Also, should we consider fetuses1598 and the senile or those in a PVS1599 as persons? See Baker1600 who alleges that those who have, will have or have had the capacity for a first-person perspective1601 should be accounted persons. But is this simply arbitrary retrofitting of philosophy to Christian doctrine (though Wiggins1602 seems to share this view; individuals are persons if typical individuals of their kind are persons)?
    8. I must also discuss animals1603 under this head. If we are identical to (human) animals then to what, exactly, are we identical – that is, just what is a human animal – and that are their persistence conditions1604? Note that there are disagreements about the referent of “animal” – is it the organism1605 or the body1606? The key issue is with corpses1607. Feldman thinks they are animals, but Olson thinks they aren’t. Death1608 is central to the enquiry. Just when does the person or animal commence1609 or cease to be? If he is resuscitated (or resurrected1610 / reincarnated1611, assuming these to be possible) what happens in the interregnum1612?
    9. As noted elsewhere1613,1614, I need to investigate the termini of human existence, and the issues they raise for the various views – the “fetus problem1615” for the constitution view and the “corpse problem1616” for animalism.
    1. Human Animals1617
      1. I haven’t anything to say currently here other than what is covered in a bunch of related topics.
      2. However, as this is what I think answers the question What Are We?1618, and is the plural of the title of "Olson (Eric) - The Human Animal - Personal Identity Without Psychology", it seems sensible to create this topic as one onto which detailed discussion may eventually be hived off.
      3. The main point – often re-iterated – is that we are Animals1619, and while we are animals of a special kind1620, there is no ontological1621 difference – other than of degree – between our species1622 and other animals.
      4. I note further that Baker1623 might agree with this as far as it goes, but she thinks there is a major ontological difference when the human animal becomes a person1624. I deny this, as will most animalists1625.
      • Homo Sapiens1626
        1. If animalism1627 is correct – and we are human animals1628 – then we are members of the species homo sapiens.
        2. Consequently, we need to say something about the nature of species, their reality and their status as natural kind1629 concepts.
        3. Also relevant is Stephan Blatti’s “Animal Ancestors” Argument for Animalism (see "Blatti (Stephan) - A New Argument for Animalism", etc.).
        4. So, we must also investigate human evolution1630, and investigate answers to the question of just when our hominid ancestors became persons1631.
        5. I also note the discussions on Neanderthals and their relation to – and possible interbreeding with – modern humans. Were Neanderthals persons1632, and were they human persons1633, or examples of non-human persons1634?
        6. If this interbreeding was actual – and it is claimed that 4% of the non-African human genome is Neanderthal (see the end of "Kohn (Marek) - The Neanderthal mind") – what has this to say about the status of Neanderthals? If they could interbreed with modern humans and produce fertile offspring, how could they be a separate species to homo sapiens? See "Wikipedia - Neanderthal", where there’s doubt over whether the Neanderthals should be designated Homo neanderthalensis or Homo sapiens neanderthalensis; ie. as a separate species or as a sub-species of modern humans.
        7. As these ancestors are all gone, investigation of the capacities of our nearest neighbours – the great apes – must often make do as a proxy, though consideration of these will be covered by what I have to say on Animal Rights1635.
        8. I just note here the contentions – in "Diamond (Jared) - The Rise and Fall of the Third Chimpanzee: How Our Animal Heritage Affects the Way We Live" – that the genus “homo” ought to include chimpanzees and gorillas.
        9. I don’t think it’s a conceptual truth that the only persons are human persons1636. However, I do think it’s an empirical truth that the only persons whose personhood we reliably know anything about are human persons, members of the species homo sapiens, so think we should start there.
    2. Biological View1637
      1. The Biological View (BV) is that we are1638 biological organisms1639, and – in particular – have the persistence conditions1640 of biological organisms. Since the organisms we are are obviously human animals1641, this view is effectively just Animalism1642.
      2. However, it is just possible that the BV and Animalism might part company for some philosophers. Maybe you might think that we are essentially animals, but can metamorphose1643 from one species to another or be reincarnated1644 as an individual of another species – or as a different individual of the same species. These might count as variants of the BV, but would not be Animalism1645 as commonly understood, since it presupposes that we cease to be at death, and are essentially human animals1646 and, indeed, essentially one and the same human animal.
      3. The BV is to be distinguished from older physicalist1647 variants – in particular the “Body View1648”.
      4. For the detailed principles of individuation and persistence criteria associated with the BV, see the Biological Criterion1649.
    3. Biological Criterion1650
      1. Biological Criteria are the criteria of identity1651 associated with the biological view1652 of what we1653 human beings1654 are.
      2. Animalism1655 takes this biological view, that we are human animals1656 (as distinct from persons1657, or immaterial souls1658). So, our persistence criteria are those of animals1659.
      3. What should be discussed here is just what these criteria are.
      4. Biological identity criteria in general are slightly wider than those of animals in particular, as they include those for plants1660 and other biological organisms1661.
      5. Locke1662 made the first stab at what this criterion might be. His view was that it was the participation in a single life1663 that made an organism1664 the same organism over time. The concept of a life is itself in need of explanation, and may not (in the absence of vitalism) be logically prior to the concept of an organism.
      6. It seems to me that the biological criterion could (theoretically, at least) allow for metamorphosis1665 (provided that the metamorphosis1666 is into another organism). There are, however, sortal1667 objections to metamorphosis1668.
      7. The jumping-off point for this topic is probably "Wilson (Jack) - Biological Individuality - The identity and Persistence of Living Entities". However, the book is at pains to point out that the persistence criteria for exemplars of particular species – and, indeed, their principles of individuation – differ greatly. Standard views are overly influenced by the assumption that all biological individuals are like large mammals rather than, say, strawberry plants1669. However, as we are large mammals, I’m not too worried about this fine point.
      8. Note that the biological criterion is to be distinguished from the body criterion1670, with which the psychological criterion1671 was originally contrasted.
    4. Animalists1672
      1. Who is an animalist depends on who you ask. Some are self-proclaimed, and others are claimed to be so by others.
      2. The following would definitely seem to be animalists:-
        1. Michael R. Ayers,
        2. Andrew M. Bailey,
        3. Stephan Blatti,
        4. William Carter,
        5. David Hershenov,
        6. David Mackie,
        7. Eric Olson,
        8. Paul Snowdon,
        9. Peter Van Inwagen, and1673
        10. Richard Wollheim.
      3. In addition,
        1. David Wiggins, and
        2. Bernard Williams
        are sometimes claimed (I think by Stephan Blatti).
      4. Olson in "Olson (Eric) - What are We? A Study of Personal Ontology" has Carter, Ayers, van Inwagen and Snowdon; but also:-
        1. Joshua Hoffman and Gary Rosenkrantz, and
        2. Trenton Merricks.
      5. However, in "Olson (Eric) - Psychology and Personal Identity", Olson claims that – contrary to appearances – David Wiggins and Jay Rosenberg are supporters of the PV1674.
      6. "Bailey (Andrew M.) - The Elimination Argument" agrees that Merricks and van Inwagen are animalists.
      7. "Johansson (Jens) - What is Animalism?" has Ayers, Carter, Mackie, Merricks, Olson, Snowdon, Van Inwagen, and Wiggins, but also:-
        1. John McDowell, and
        2. Derek Parfit.
      8. It is likely that many atheist or agnostic philosophers who don’t specifically treat of personal identity are animalists. "Quinn (Philip L.) - Review of Antony Flew's 'The Logic of Mortality'" seems to describe Antony Flew as such, though Quinn doesn’t use the term “animalist”.
      9. "Bourget (David) & Chalmers (David) - The PhilPapers Surveys: What Do Philosophers Believe?" has a question on Personal Identity, and it seems that only just under 17% of faculty at elite philosophy departments are even inclined towards animalism, with just under 6% being convinced. No recognised Animalist appears to have responded to the survey (or at least allowed their opinions to be published). I did, however, spot that my former supervisor – Jennifer Hornsby – claimed to be an animalist, though I don’t think she’s written anything on the subject.
  2. Organisms1690
    1. Organisms feature highly in animalist discussions of personal identity, in that according to animalism1691, human persons1692 are (numerically identical1693 to) human animals1694, which are organisms.
    2. According to some philosophers – for instance Peter Van Inwagen – sorites1695 and multiple-occupancy1696 arguments yield that the only things that exist1697 are simples and organisms.
    3. Organisms are to be distinguished from their bodies1698, which have different persistence conditions1699, for example post-mortem as corpses1700.
    4. An organism seeks to maintain itself against its environment, and exchanges matter1701 with it. An organism possesses none of its matter essentially1702, and may indeed replace all – or at least most of1703 – its matter many times during its life1704.
    5. When organisms ultimately fail in the above endeavour, they die1705.
    6. Prior to this, they are alive1706; organisms are the only things that may properly be said to be alive – life is a biological process1707. Other things may exist1708, and come to an end, but they do not literally live1709 or die1710.
    7. Normally, a proper part of an organism is not an organism. Presumably organelles – such as mitochondria – are (parasitic) organisms living within, and – collectively if not individually – essential1711 parts1712 of, other organisms.
    8. In particular, a brain1713 is not an organism, but an organ. We are organisms, not organs, whatever psychological TEs1714 might imply, so we are not our brains. See my remarks on Brains1715, BIVs1716 and Brain Transplants1717 for discussion of whether we could survive as1718 our brains in a worst-case scenario and whether our brains are ‘just another organ’ as Olson1719 claims.
    9. See "Wilson (Jack) - Biological Individuality - The identity and Persistence of Living Entities" for a full discussion of the persistence1720 of organisms, though this considers the generality. The book thinks that the general topic is too much swayed by considerations of large mammals, which – of course – is what we are, and the only organisms whose persistence conditions I care about in this research.
    1. Life1721
      1. There are (at least) two sub-topics that fall under this topic:-
        1. Lives: Life as an (extended) event – the career of an individual.
          → See "Wollheim (Richard) - The Thread of Life"
        2. Life: Life as a biological process.
          → See "Wilson (Jack) - Biological Individuality - The identity and Persistence of Living Entities"
      2. I assume that lives can be had by individuals that do not have (biological) life, but think it unhelpful to talk of non-biological individuals as “alive”, except in a figurative sense.
      3. Life – and its correlate, death1722 – is a biological process, on which the word of the biologist (maybe as clarified by the philosopher) is final.
      4. I’m open to the idea that alternative biologies – other than the carbon-based exemplar ubiquitous on earth – are possible – or at least conceivable. So, anything sufficiently complex that “can extract energy from its environment, grow, repair damage to its body, and reproduce” is alive (Elliott Sober). We wouldn’t want to deny that aliens are alive, nor – just maybe – sufficiently complex machines of the far future.
      5. I have a question on the “reproductive” requirement above. At most, this must apply to “typical representatives” – else the infertile would not be alive. But – important though reproduction is for evolution1723 – I’m not sure why this is essential. Note that computer hardware is unlikely to reproduce – or at least it’s not necessary that it should, as it can be manufactured. However, computer programmes would be able to – this seems to be claimed of AIs, who are hoped to be able to produce improved versions of themselves.
      6. What I object is the notion that computer programmes are – or will eventually be – “alive” in the same sense as organisms are alive, though their hosting computers might be.
      7. I say this by analogy with my thoughts on the supposed consciousness1724 of computer programs: computer programs can’t be conscious, though the hardware that runs them might be. However, I’m not sure the analogy works, as the “living” is said to be at the program level, and not to involve any physical changes to the computer (other than the usual changes to the contents of memory locations).
      8. So, "Tegmark (Max) - Life 3.0: Being Human in the Age of Artificial Intelligence" has – as is indicated by the book’s title – three versions of life, but only Life 1.0 is ‘life’ in my sense; the others are – or impact on – ‘lives’:-
        1. Life 1.0: Biological Evolution1725 – no hardware or software change within a lifetime.
        2. Life 2.0: Cultural Evolution1726 – software, but not hardware, change within a lifetime. Learning.
        3. Life 3.0: Technological Evolution1727 – potential for both software and hardware change within a lifetime.
      9. "Al-Khalili (Jim) & McFadden (Johnjoe) - Life on the Edge: The Coming of Age of Quantum Biology" has recently raised the question whether quantum phenomena1728 are essential to life. This is not parallel with speculation on the association of quantum phenomena with Consciousness1729 as it seems to be based on hard science – mechanisms – rather than ‘explaining’ one mystery with another.
      10. So, interesting philosophical questions about Life include:-
        1. Just what is (biological) life?
        2. When does biological life begin? This is presumably an empirical question, the answer to which will vary from species to species.
        3. Are there borderline cases of life?
        4. When does life cease? Again, the answer to this question will be species-dependent.
        5. Can life intermit1730? Does it make sense to say that so-and-so died1731 (on the operating table, say) and then revived?
      11. Interesting philosophical questions about Lives include:-
        1. How are lives individuated?
        2. What sort of things can have lives?
        3. How closely coupled is the life of a human organism1732 with the life of a human person1733?
        4. Can a life lived courtesy of a human organism be continued after the death1734 of that organism?
      • Animation1735
        1. “Animation” is an important matter. Just when does a particular life1736 begin, and does it require any “vital force” or “infused soul1737” (as the term implies)? Of course, the scientific answer to the latter question is that it doesn’t. However, such notions are central to many religious claims, though are not assumed by Christian Materialists1738.
        2. We also need to consider:-
          1. Reanimation, and
          2. Suspended animation
        3. Both of these concepts are beloved of the Transhumanists1739, at least those who are interested in the idea that their body1740 or brain1741 might be frozen until the time comes when it is possible for their reanimation.
        4. Suspended animation – in the form of cryoscopic suspension – appears as a TE1742 in "Clark (Andy) & Kuhn (Robert Lawrence) - Aeon: Video - Andy Clark - Virtual immortality", to try to demonstrate that we are “patterns in information space1743”.
      • Quantum Mechanics1744
        1. Quantum Mechanics, per se, is very peripheral to my research concerns, but is connected – or alleged to be connected – to sub-topics that are slightly less peripheral.
        2. At a first guess, these include:-
          1. Consciousness1745: either because – doubtfully – QM “explains” consciousness or – equally doubtfully, in my view – because “observers” are conscious and so consciousness is involved in the measuring process and the “collapse of the wave function”.
            • My view on the former has been that “explaining” one scarcely-understood phenomenon by another even-less-understood phenomenon has been a non-starter. Also, the mechanisms proposed have been very dubious.
            • My view on the latter is that the “observer” is any interfering macroscopic object, the record of which (eg. on a photographic plate) may or may not be viewed by a conscious observer, but has the record nonetheless.
          2. Life1746: because QM may be involved – or necessary for – various life-processes and indeed the origin of life itself.
          3. Teletransportation1747: Because of quantum entanglement.
          4. Transhumanism1748: because of quantum computing and the impact this might have on superintelligence and AI generally.
        3. The Many Worlds Interpretation of QM is sometimes said to involve either a very profligate example of Fission1749, or a spreading out of the “Quantum Self1750” across all these worlds. This is discussed in "Ball (Philip) - Beyond Weird: Why Everything You Thought You Knew About Quantum Mechanics is ... Different", pp. 288-305, Chapter “There is no other ‘quantum’ you”.
    2. Plants1751
      1. I’d never imagined having to say anything about Plants under the topic of Personal Identity. However, there appears to be a movement in biology and analytic philosophy to include plants in the category of organisms1752 with minds1753, on account of their ability to take advantage of their environment.
      2. I think this is absurd, and is simply changing the meaning of “mind1754”.
    3. Evolution1755
      1. One of the arguments for Animalism1756, due to Stephan Blatti, is that from our evolutionary origins. If we’ve evolved from animals1757, then it’s likely that’s what we are1758. This requires careful consideration, because it would seem to provide the default view of what we are – but then so does common sense.
      2. Species evolve – both improving the characteristics of average exemplars of that species but also generating new species. So – prima facie – there’s no reason not to describe the emergence of human persons1759 as “more of the same” from non-person hominids, ie. just tweaking their capacities – rather than as making an “ontological change” – as Baker1760 argues.
      3. The persistence criteria1761 for species also makes an interesting topic of research, as does deciding just what “species” are: for instance, are they concepts1762 or universals1763 or are they collections of concrete individuals1764? Is the evolution of a new species a form of metamorphosis1765?
      4. There will be some considerable overlap between this discussion and that on Homo Sapiens1766.
      5. There’s also an overlap between speculations on the future of human evolution and Transhumanism1767.
      6. Evolutionary Psychology has much to say (and much that is disputed) about what makes us tick – what makes us what we are1768 in both a narrative1769 and a metaphysical sense.
      7. There’s also the question of the evolution of consciousness1770; when, why and how did it evolve?
      8. I might add a discussion of cultural evolution – see especially "Heyes (Cecilia M.) - Cognitive Gadgets: The Cultural Evolution of Thinking" – and how this has made us what we are1771 by extending our cognitive capacities.
      • Origins1772
        1. Our origins – just when “we” came into existence – are closely tied up with whatever “we” are1773.
        2. So, an Animalist1774 (who thinks that we are essentially animals1775, rather than persons1776, and for whom psychology1777 is irrelevant to our identity) would insist that we come into existence earlier than would a supporter of the Psychological View1778, or of the Constitution View1779 (for whom a First-Person Perspective1780 is definitive of our identity). Our psychology – and particularly a psychology rich enough to qualify us as persons1781 – comes into existence fairly late on in our development.
        3. For modal1782 reasons, endurantists1783 can’t have “us” coming into existence before the possibility of twinning1784 is past, though perdurantists1785 don’t have this worry.
        4. I would also like to discuss Saul Kripke’s views on origins-essentialism.
          1. Metaphysically, I could not have been born other than from the particular egg-sperm combination from which I was born, and consequently
          2. Practically, I could not have been conceived other than at the time at which I was conceived.
        5. There are ethical ramifications in the context of abortion1786 debates (and infanticide, for that matter), but I cannot pursue these in any detail.
      • Genetics1787
        1. Genetics would seem to be a fairly peripheral topic as far as my thesis is concerned, though it is releveant insofar as some philosophers claim that we are identical to our genome, or that our genome is an essential Property1788 of a Human Being1789 (or any other Animal1790 or Plant1791 with a genome).
        2. As such, it has connections to What We Are1792, our Origins1793 and whether or not we are Information1794.
  3. Animals1795
    1. According to the Animalists1796, human animals are what we are1797. Some philosophers, eg. Baker1798, seem to think that describing us as animals is demeaning, but this seems to muddle together all the varieties of animal into one bestial bunch. Clearly, there are lots of differences between lug-worms and the great apes, and further – but much less significant – differences between the non-human great apes and ourselves.
    2. Several points need to be made here.
      1. Firstly, what all animals have in common is that they are organisms1799 and have common persistence-conditions1800 (PCs) in virtue of this fact; in particular, our psychology1801 – however important to us1802 – is irrelevant to our persistence1803, and hence, to our identity.
      2. Secondly, the contentious point is whether aspects of the psychology1804 of some higher animals are so distinctive that (as Baker claims) an ontological1805 difference beyond the mere existence of a new species is in evidence. Baker thinks the watershed is a First Person Perspective1806.
      3. Leading on from this is the claim that the FPP1807 is so important, that we are not animals, but persons1808.
    3. A question to consider, probably under the topic of organisms1809, is whether the PCs of all organisms are the same. Plants1810 and animals are both organisms.
    4. Non-animalists raise issues about the presumed supreme moral status and cognitive abilities of human beings1811. Demonstrating that these abilities – however well or badly exemplified by humans as a species or as individuals – are on a continuum with those of the higher animals – in particular the great apes – rather than unique in kind to human beings – requires the researcher into personal identity to investigate just what the cognitive and moral capacities of animals actually are. This study is stimulated by Locke’s1812 claim that personhood1813 is a forensic property1814.
    1. Animal Rights1815
      1. The motivation for including this topic – which is in its primarily ethical aspect largely tangential to my Thesis (which focuses on metaphysics) – is at least fivefold:-
        1. Firstly, as Locke noted, personal identity is a forensic1816 matter.
        2. As I’m inclined towards animalism1817, the status of other animals is relevant – in particular in resisting the claims of those (eg. Lynne Rudder Baker) that when a First Person Perspective1818 comes into existence, we get a major ontological1819 change.
        3. Some animal rights theorists – eg. Gary Francione – want to give (at least some) animals the legal and moral standing of persons1820.
        4. Other contemporary philosophers – eg. Peter Carruthers – argue that animals have no rights at all.
        5. My view is somewhere in the middle. I’m not a fan of rights (in the absence of a contract), but think that human beings have duties to one another and to the higher animals in virtue of the others’ needs.
      2. A passage in the advertising blurb for "Calarco (Matthew) - Thinking Through Animals: Identity, Difference, Indistinction" is:-
        • The rapidly expanding field of critical animal studies now offers a myriad of theoretical and philosophical positions from which to choose.
        • It uses three rubrics — identity, difference, and indistinction — to differentiate three major paths of thought about animals.
          1. The identity approach aims to establish continuity among human beings and animals so as to grant animals equal access to the ethical and political community.
          2. The difference framework views the animal world as containing its own richly complex and differentiated modes of existence in order to allow for a more expansive ethical and political worldview.
          3. The indistinction approach argues that we should abandon the notion that humans are unique in order to explore new ways of conceiving human-animal relations.
        • Each approach is interrogated for its relative strengths and weaknesses, with specific emphasis placed on the kinds of transformational potential it contains.
      3. A fairly recent book that catalogues the atrocities and discusses the issues is "Ricard (Matthieu) - A Plea for the Animals: The Moral, Philosophical, and Evolutionary Imperative to Treat All Beings with Compassion".
  4. Arguments for Animalism1821
    1. I’m not currently aware of many arguments in favour of Animalism1822. Rather, Animalists argue that Animalism is – or ought to be – the default position, and try to pick off the arguments of those who have other positions on personal identity.
    2. The main argument – covered next - is Olson1823’s Thinking Animal Argument1824, which is both an argument for Animalism and intended as a refutation of the Constitution View1825.
    3. However, there are others, and saying that ‘it’s just obvious’ that we are animals is insufficient, especially since most philosophers deny this ‘obvious’ fact.
    4. The only other argument I’m aware of (or can remember) is the “Animal Ancestors Argument” as given in "Blatti (Stephan) - A New Argument for Animalism", with an attempted rebuttal by "Gillett (Carl) - What you are and the evolution of organs, souls and superorganisms: a reply to Blatti".
    1. Thinking Animal Argument1826
      1. This argument is otherwise known as the “too many minds” argument, the “too many thinkers” argument, or Olson1827’s “master argument”. For many years, Olson has trotted out this argument at every opportunity.
      2. The basic idea is that a human animal1828 thinks, and if it is not identical to the person1829, then we have too many thinkers – the animal1830 and the person1831, unless we deny that one or other of them thinks, which is at the least very counter-intuitive.
      3. Additional to this metaphysical problem, we have – Olson says – an epistemological question. Which one are we? The animal or the person?
      4. While I’m inclined to accept animalism1832, I think this argument fails, and it does the cause for animalism no good by having it as the main argument in its favour.
        1. This form of argument has been used by nihilists1833 to argue that there are no ordinary things, usually invoking vagueness1834 and fuzzy boundary considerations. Which of the many cats (give or take a few atoms) is the “real cat”? There’s no principled reason and I can’t know which. So there are no cats, or if there are, I can’t know which of the many cat-a-likes is the real cat. Since there are ordinary things, there must be something wrong with this argument form (though I don’t yet have a strong opinion as to just what it is). I accept Moore’s “two hands” argument – nothing is plainer than that I have two hands, so any metaphysical or epistemological theory that says I haven’t, or can’t know that I have, must have something wrong with it. I do know that there are arguments against the existence of hands and other “arbitrary undetached parts”, so maybe it’s safer to stick to cats. Olson (see "Marshall (Richard) & Olson (Eric) - Eric T. Olson: The Philosopher with No Hands"), as well as Peter Van Inwagen (eg. in "Van Inwagen (Peter) - The Doctrine of Arbitrary Undetached Parts"), argue against the existence of hands, though van Inwagen is happy with the existence of cats and other organisms, so I need to address their arguments head-on to determine the subtleties thereof.
        2. Baker1835 and other supporters of the Constitution View1836 have answers to the argument used as an argument against their view (along the lines of “thinking derivatively”).
        3. There are also resources like “Lewis counting”, as in perdurantism1837 where a “soon to fission1838” entity is really two entities sharing stages. Our language is fit for purpose.

Concluding Remarks
  1. Having discussed Animalism, we can now in our next Chapter1839 turn to the main alternative I want to consider, the Constitution View and the arguments for it.
Chapter 7: The Constitution View and Arguments for it1840

Abstract
Chapter Introduction1841
  1. Baker’s account of Constitution1842 is not the standard Mereological1843 account, of some composite body being constituted by its parts, but is her own idea that requires – and receives – detailed explication.
  2. Despite this deviation, it is worth spending some time on standard Mereology, in particular mereological Essentialism1844 (which challenges any idea of Persistence).
  3. Finally, there needs to be a discussion of Hylomorphism1845, an Aristotelian idea that has some modern supporters, and which may or may not be similar to the Constitution View1846 (CV).
  4. As a cornerstone of her Constitution View, Lynne Rudder Baker1847 reifies a useful idea – that of a First-Person Perspective1848. It is the FPP that individuates persons, according to Baker, so the FPP requires explanation as well. Baker retrofits its definition so that – according to her – it applies to non-defective Human Beings (and, no doubt, higher beings) but not to any non-human Animals.
  5. The big analogies for the CV are TEs involving Coincident Objects1849, previously seen in discussions of Contingent Identity, though this isn’t the message the CV takes because it denies that Constitution is Identity.
  6. I’ve parked in this Chapter discussion of further standard problems of Coincident Objects, starting with the Statue and the Clay1850, Dion and Theon1851 (more recently repackaged as Tibbles the Cat1852) and continuing on to classic conundrums such as The Problem of the Many1853 and The Ship of Theseus1854. They are here because of their connection to Mereology, with Constitution being introduced as an explanation, though they are relevant elsewhere as well.
  7. Baker has a commitment to Persons being Substances in their own right, rather than “Person” being an honorific title applied to substances that at other times might not deserve the honorific. She thinks that a Person comes into existence with the FPP, which make an Ontological difference. She asserts that many other views do not Take Persons Seriously. All this is covered in Chapter 3 (on Persons) but could as well be covered in this Chapter.
  8. One suspects that Religious1855 commitments strongly influence the philosophy of many supporters of the CV, who tend to be Christian Materialists1856 and who want a way for Christians to persist through Resurrection.

Main Text
  1. Constitution1857
    1. At first sight, it might seem that a full understanding of constitution – by which I mean Material Constitution – is required to understand Lynne Rudder Baker1858’s Constitution View1859 of Personal Identity.
    2. However, the concept of Constitution in this view seems to differ from the normal mereological1860 view of material constitution.
    3. As a way in to this subject, which is geared towards the topic of Personal Identity, I intend in the first instance to focus on two chapters from "Baker (Lynne Rudder) - Persons and Bodies: A Constitution View", namely:-
      1. "Baker (Lynne Rudder) - The Very Idea of Constitution", and
      2. "Baker (Lynne Rudder) - The Coherence Of the Idea of Material Constitution".
    4. I will then look at two chapters from Baker’s book "Baker (Lynne Rudder) - The Metaphysics of Everyday Life: An Essay in Practical Realism" that deal, respectively, with these two aspects of Constitution, namely:-
      1. "Baker (Lynne Rudder) - Constitution Revisited",
      2. "Baker (Lynne Rudder) - Mereology and Constitution".
    5. I will, of course, have to consider other accounts. I had supposed that Baker’s view was idiosyncratic, though "Wasserman (Ryan) - The Constitution Question" considers it to be widely held.
    6. Wasserman outlines the traditional1861 view as follows:-
      1. Adequacy conditions on any proposed answer to the Constitution Question.
        • First, constitution requires spatial coincidence — x constitutes y at t only if x and y have the same spatial location at t.
        • Second, constitution requires material coincidence — x constitutes y at t only if x and y have all the same parts.
      2. The formal properties of the constitution relation (are)
        • First, the constitution relation is transitive. So, consider a representative clay statue (Statue) and the lump of clay (Lump) from which it is made. If Lump is constituted by a certain aggregate of elementary particles and Statue is constituted by Lump, then Statue is also constituted by that particular aggregate of elementary particles.
        • Second, the constitution relation is irreflexive, for the defenders of the constitution view traditionally deny that objects like Lump and Statue constitute themselves.
        • Finally, the constitution relation is asymmetric; while Lump constitutes Statue, Statue does not constitute Lump.
      3. Constitution is not mere coincidence, for coincidence (the sharing of spatial location or parts) is both reflexive and symmetric.
      4. In summary, constitution requires material (as well as spatial) coincidence and that it is a transitive, irreflexive, asymmetric relation.
    7. Various papers by Eric Olson, of course, also consider the topic, which he considers would be fatal to animalism if it would be were it true. I should probably start with "Olson (Eric) - Composition and Coincidence".
    8. There may also be an overlap between Constitution and Supervenience1862.
    9. The various cases of ‘coincidence’ – addressed later in this Chapter – highlight the question whether the constitution-relation is or is not the identity-relation. Is there anything left out in the description of a thing once we’ve said what it is made up of, and how these parts link together? Those – like Baker – who hold that one whole thing can be constituted by another whole thing deny identity. For instance – Baker says – a stature is something over and above its clay because it requires an external relation – to an art-world, or at least to people who care about statues – before it is a statue.
    1. Mereology1863
      1. While Baker1864’s understanding of constitution1865 is distinct from a mereological one, it is necessary to understand mereology. I would include the following reasons relevant to my Thesis:-
        1. Lots of arguments relevant to multiple occupancy theses depend on mereological issues. See Dion and Theon1866 and the like. These are collated under the topic of Coincidence1867.
        2. Mereological Essentialism1868 has an impact on the whole notion of persistence. If it is taken seriously, we may have to countenance Scattered Objects1869 or no physical thing would persist for long on this view.
        3. The DAUP (Doctrine of Arbitrary Undetached Parts) impacts on whether such things as brains exist. I1870 can’t be a brain1871 if brains1872 don’t exist.
        4. It impacts on issues of vague identity1873 and Olson1874’s Thinking Animal Argument1875.
      2. As a general principle I will discuss here whether proper parts of things exist and – if so – how they make up the things of which they are parts. The note on Constitution1876 – which overlaps with that on Coincidence1877 – will focus on how one whole things can “constitute” another whole thing. All with a focus on Personal Identity, of course.
      • Essentialism1878
        1. The topics of relevance to my Thesis to cover under this head will include:-
          1. Mereological1879 essentialism; the doctrine that wholes have all their parts essentially – that is, that a whole ceases to exist at the moment it loses or gains a particle, however small; mutatis mutandis for abstract objects.
          2. A second topic will be essential properties1880; those whose loss cause their owner to cease to exist.
        2. Mereological1881 essentialism
          1. Whether we have any essential parts depends on what we are1882.
          2. If we are fundamentally psychological beings, then it’s unclear whether we have proper parts – particularly if we are souls1883; at least Descartes thought we didn’t, given that the mind is not extended. However, we would not survive the loss of our psychology1884, but – and this is a problem for any psychological view1885 – it is vague1886 just how much psychology is enough to ensure our survival1887.
          3. If we are organisms1888, then we can lose – indeed do lose – all our parts over time, and provided change1889 is gradual, and enough of them are replaced, we persist1890. There is an argument within the animalist1891 camp whether our brains are “just another organ” or whether their regulatory function means they are essential to our survival1892.
          4. If we are brains1893 – or proper parts thereof – then our brains would seem to be essential parts, though there might be some quibbling about whether they might be chiselled down a bit.
          5. "Chisholm (Roderick) - Which Physical Thing Am I? An Excerpt from 'Is There a Mind-Body Problem?'" – seemed to think we are mereological atoms, though the identity of the atom is obscure. If there is such a thing, it would be our only essential part.
        3. Property1894 essentialism
          1. If “being a person” is a property that we have, and we are human animals1895, then – animalism1896 claims – we would survive even when we no longer qualify as persons1897 (and also existed1898 before we became persons).
          2. Most philosophers who aren’t animalists1899 say that we are essentially persons1900, so can’t survive if we are no longer persons, or even if our personality1901 has changed too radically. Some of our mind1902’s properties may be essential.
          3. I’m not sure whether Lynne Rudder Baker treats the First Person Perspective1903 as a property of the person, or the person itself. But, if it is a property, it will be an essential one.
    2. Hylomorphism1904
      1. This Aristotelian idea is very peripheral to my concerns, though it appears somewhat similar to – or a rival to – the Constitution View1905, as is discussed in "Quitterer (Josef) - Hylomorphism and the Constitution View".
      2. "Keles (Serap) - Personal identity and persistence over time : the hybrid view with regard to hylomorphism" looks important in attempting to bring together Animalism1906 and the Constitution View1907 as a Hybrid Theory1908 in the context of Hylomorphism.
      3. "Cohen (S. Mark) & Reeve (C.D.C.) - Aristotle’s Metaphysics" discusses the topic of Hylomorphism in Section 7 (Substance and Essence) and Section 8 (Substances as Hylomorphic Compounds).
      4. Wikipedia has a sound-looking article ("Wikipedia - Hylomorphism"), from which I’ve extracted a few quotations (pending my writing something of my own):-
        • Aristotle defines X's matter as "that out of which" X is made. For example, letters are the matter of syllables. Thus, "matter" is a relative term: an object counts as matter relative to something else. For example, clay is matter relative to a brick because a brick is made of clay, whereas bricks are matter relative to a brick house.
        • Change is analyzed as a material transformation: matter is what undergoes a change of form. For example, consider a lump of bronze that's shaped into a statue. Bronze is the matter, and this matter loses one form (that of a lump) and gains a new form (that of a statue).
        • Aristotle applies his theory of hylomorphism to living things. He defines a soul as that which makes a living thing alive. Life is a property of living things, just as knowledge and health are. Therefore, a soul is a form — that is, a property or set of properties — belonging to a living thing. Furthermore, Aristotle says that a soul is related to its body as form to matter.
        • Hence, Aristotle argues, there is no problem in explaining the unity of body and soul, just as there is no problem in explaining the unity of wax and its shape. Just as a wax object consists of wax with a certain shape, so a living organism consists of a body with the property of life, which is its soul. On the basis of his hylomorphic theory, Aristotle rejects the Pythagorean doctrine of reincarnation1909, ridiculing the notion that just any soul could inhabit just any body.
        • It is unclear whether Aristotle identifies the soul with the body's structure. According to one interpretation of Aristotle, a properly organized body is already alive simply by virtue of its structure. However, according to another interpretation, the property of life — that is, the soul — is something in addition to the body's structure. Likewise, according to this second interpretation, a living body is alive not only because of its structure but also because of an additional property: the soul is this additional property, which a properly organized body needs in order to be alive. John Vella uses Frankenstein's monster to illustrate the second interpretation: the corpse lying on Frankenstein's table is already a fully organized human body, but it is not yet alive; when Frankenstein activates his machine, the corpse gains a new property, the property of life, which Aristotle would call the soul.
  2. Constitution View1910
    1. The Constitution View is that human persons1911 are constituted1912 by their bodies1913 but are not identical to them, though a lot more needs to be said here.
    2. The primary source of this View is (or was) Lynne Rudder Baker1914, starting with "Baker (Lynne Rudder) - Persons and Bodies: A Constitution View".
    3. Baker’s account of constitution is not the standard mereological1915 account, of some larger body being constituted by its parts, but is her own idea that requires explication. She appears to have a non-mereological view of constitution which is hard to unravel, involving the relation of one complete thing to another (or to a context).
    4. I also need to discuss her concern for primary kinds1916, and the concept of “having of properties1917 derivatively”.
    5. It’s unclear to me whether the brain1918 has a special place for Baker; as far as I remember, she uniformly refers to “bodies1919”.
    6. Baker also has a commitment to Persons1920 being substances1921 in their own right, rather than personhood being an honorific title applied to substances that at other times might not deserve the honorific.
    7. She also reifies a useful idea – that of a First-person Perspective1922. It is the FPP that individuates persons, according to Baker, so the FPP requires explanation as well.
    1. Lynne Rudder Baker1923
      1. Lynne Rudder Baker was1924 notable for defending her version of the Constitution View1925 of Personal Identity, which is important in its own right, but also in opposition to Eric Olson1926’s Animalism1927.
      2. Baker is a “Christian Materialist1928 in that she denies that we are (or have) immaterial souls (see "Baker (Lynne Rudder) - Christians Should Reject Mind-Body Dualism").
      3. However, she is against physicalism1929 in the philosophy of mind – see "Baker (Lynne Rudder) - Saving Belief: A Critique of Physicalism".
      4. Her view on Personal Identity is, to quote "Baker (Lynne Rudder) - Materialism with a Human Face", that “Persons are constituted by bodies with which they are not identical. The metaphysical difference between persons and their bodies is that persons have first-person perspectives1930 essentially. ”
      5. Her concept of a First-Person Perspective1931 strikes me as important and correct. However, she thinks of personhood1932 not merely as a property of certain beings, but as making some sort of ontological1933 difference.
      6. Because a person is constituted by – but not identical to – the being that constitutes it, she claims that a particular person is portable from one of these beings to another. I don’t think she would allow a person to exist disembodied, as though the Cheshire Cat’s smile could exist in the absence of the cat, but I still think she is reifying a property1934.
      7. From my perspective, her most important work is "Baker (Lynne Rudder) - Persons and Bodies: A Constitution View", but also see "Baker (Lynne Rudder) - Precis of 'Persons & Bodies: A Constitution View'" in "Baker (Lynne Rudder), Etc. - E-Symposium on 'Persons & Bodies: A Constitution View'".
      8. However, "Baker (Lynne Rudder) - Big-Tent Metaphysics", part of "Olson (Eric), Etc. - Abstracta Special Issue on 'The Human Animal'", and analysed here1935, is as good a place as any to start.
      9. That said, her more recent book – "Baker (Lynne Rudder) - The Metaphysics of Everyday Life: An Essay in Practical Realism" – may give a more technical account of some of her ideas.
    2. First-Person Perspective1936
      1. The concept of a “First-Person Perspective” (FPP) is central to the Constitution View1937 of personal identity, which I reject. However, the concept of a FPP is important in its own right, and explains the attraction of Psychological Views1938 of personal identity. It also motivates Hybrid1939 Accounts.
      2. Just what the FPP is needs spelling out – what does Lynne Rudder Baker1940 think it is, and why does she think it so ontologically1941 important? She seems to be obsessed by the thought that beings that can contemplate their own deaths1942 are ontologically different from those that are presumed not to be able to do so. Why is it that it is this, rather than simply a phenomenally conscious1943 perspective, that counts as the ontological watershed? I suppose either both or neither might count ontologically. Also, both might have enormous significance, yet not imply that an ontologically distinct entity had come on the scene. Note that – for Baker – it’s the moment the FPP (or maybe the as-yet-unrealised capacity for an FPP) comes on the scene that marks the ontological change, not the emergence of the constituting1944 individual1945.
      3. We might instead posit another property1946 – that of consciousness of Self1947 – as the critical moment in the ontological ladder leading to persons1948. I suspect some philosophers of rigging the qualifications for personhood1949 so that only human beings1950 – and maybe some others even more exalted (like God and angels) – qualify. Non-human animals1951 must be excluded to ensure the uniqueness and specialness of humans.
      4. Also, can we really use this term to explain1952 personal identity, as “person1953” appears in it? If it’s supposed to be elucidatory of personal identity, we seem to have a circle.
      5. Really what’s important – it seems to me – is that we have animals with certain properties that are important to them. We can’t reify the property and make it a stand-alone thing, like the Cheshire Cat’s smile. Nor can we assume without a lot of careful argument that this property can hop from one infrastructure to another – as in uploading1954 or resurrection1955.
      6. An argument I’m fond of is that – despite whatever psychological1956 differences there may be between me and my future self1957 – I can both rationally anticipate his experiences and should display rational concern for his well-being. That is because we share the same “window on the world” (which is just the FPP without the tendentious terminology). I just need to try out the future great pain test1958 on the individual resulting from some adventure and see if I'm worried!
      7. Now is this “window on the world” the same as a FPP? After all, it may be that my senile old self1959 no longer qualifies as a person1960, though is phenomenally conscious1961, and I should be concerned for him whatever his ontological status; only the absence of phenomenal consciousness1962 would remove all that matters1963.
      8. In summary, I think the FPP is a useful concept, and represents our window on the world, and what matters1964 to us in survival1965. But it is a property of a human animal1966, and that animal’s persistence1967 doesn’t rest upon it.
    3. Coincident Objects1968
      1. Coincident objects are those – presumed to be distinct – that (appear to) occupy the same space – or substantially the same space – at the same time.
      2. There are a number of classic puzzles that have worried about such things, and which appear below.
      3. Additionally, the alleged problems with coincident objects feature in Olson1969’s Master Argument (Thinking Animal Argument1970) in favour of Animalism1971 and contra the Constitution View1972.
      4. The classic consideration of the topic is "Wiggins (David) - On Being in the Same Place at the Same Time".
      5. "Gallois (Andre) - The Puzzle Cases" draws together some of these and more, though in the cause of a deviant logic of identity1973.
      • The Statue and the Clay1974
        1. This topic arises in the theory of material constitution1975 when we are considering whole objects (rather than their parts) that appear to be co-located because they are (or seem to be) of different kinds1976, or (seem to) have different persistence conditions1977.
        2. This issue was exploited by "Gibbard (Allan) - Contingent Identity" in the cause of supposed contingent identity1978.
        3. Supporters of the Constitution View1979 of Personal Identity (are sometimes said to) hold that persons1980 are constituted by their bodies1981 much as statues are constituted by lumps of clay.
        4. Some – eg. Trenton Merricks – get rid of this whole problem by adopting eliminativism1982 – there are no such things as statues, only clay arranged statue-wise. See "Merricks (Trenton) - No Statues".
      • Dion and Theon1983
        1. ‘Dion and Theon’ is an ancient conundrum that has been revived by Peter Geach, Michael Burke and others – in the form of “Tib and Tibbles1984” – and is put to a variety of uses.
        2. It is so closely associated with one version of Tibles the Cat1985 that I’ll describe them together, though a variant form of Tibbles the Cat will be discussed under its own Note.
          1. The conceit is that there is a whole man (Dion; or cat, Tibbles) and a partially overlapping thing (Theon or Tib) that is identical to Dion (or Tibbles) apart from its right foot (or tail). It is, of course, moot whether this “thing” is a man (or cat) – or even whether it exists at all.
          2. Subsequently Dion (or Tibbles) suffers the misfortune of losing the relevant member.
          3. Post-ectomy, it appears that Dion is identical to Theon (and Tibbles to Tib).
          4. What are we to make of this apparent contradiction, as it would seem that beforehand the respective pairs were non-identical?
        3. The solutions to this puzzle, taken from "Burke (Michael) - Dion and Theon: An Essentialist Solution to an Ancient Puzzle", include:-
          1. Restrict the principle that different objects cannot occupy the same place at the same time. Some philosophers, following Locke1986 and David Wiggins1987, modify the principle so that it applies only to objects of the same sort.
          2. Embrace mereological essentialism1988, the doctrine that each of the parts of an object is essential to its identity. Popular in antiquity, but not supported these days.
          3. Deny that the concept1989 of a torso is a proper one, or deny that there ever was such a thing as Theon.
          4. Invoke the doctrine of temporal parts.
          5. Relativizing identity1990, whether to time or to sort1991. George Myro and Peter Geach both would say that the amputation has left just one (man-sized) object, an object that is both a man and a torso. Is that object Dion? Or is it Theon? Myro's answer would be "both."
          6. Michael Burke’s solution: Post amputation there is just one object; it is (predicatively) both a man and a torso; this one object is Dion, who once was two-footed and now is one-footed; Theon has ceased to exist.
      • Tibbles the Cat1992
        1. There appear to be two puzzles involving Tib and Tibbles, both due to Peter Geach.
          1. Tibbles and Tib – his tail-less concommitant – feature firstly as a variant of Dion and Theon1993.
          2. There’s also a variant of the Problem of the Many1994, in which Tibbles loses 1,000 hairs one by one.
        2. I’m not sure there’s much that will need to be added here that’s not to be covered in one or other of those two Notes.
        3. I note in passing that "Parsons (Josh) - Dion, Theon, and DAUP" refers to "Van Inwagen (Peter) - The Doctrine of Arbitrary Undetached Parts" and the problem of Descartes’ Foot, another variant on this theme.
      • The Problem of the Many1995
        1. This problem is to do with objects – whether clouds or human beings – that have vague boundaries. What is wrong with saying that instead of just one object there are many overlapping ones; or, if we hate this idea, what’s the solution so that we only have one (as we first thought)?
        2. Clearly, this topic overlaps considerably with that on Vagueness1996, but is a particular symptom thereof.
        3. There are also connections to:-
          1. Dion and Theon1997, and
          2. Tib and Tibbles1998
        4. Whereas these are rather “The Problem of the Few”, some of the same issues arise. However, it’s easier to come to a principled decision as to which is the “real” person (or cat) in these cases.
        5. The problem doesn’t just arise with living1999 things, so can’t be solved (I don’t think) by moving from a substance2000 to a process2001 metaphysics, though it’s worth investigation.
      • The Ship of Theseus2002
        1. Versions:-
          • The original version, recounted by Plutarch, just considers whether an artifact (specifically a ship) can continue the same thing if its parts are gradually replaced until all the original parts have been replaced.
          • Hobbes added the further paradox of collecting up the replaced parts and assembling them into a rival claimant to be the original ship.
          • There are various “minimalist” cases in popular culture whereby half of an artifact is replaced, followed by the other half, and maybe the process is then repeated.
            1. The traditional example is “grandfather’s axe” (the blade and the handle being successively replaced).
            2. A more recent one is “Trigger’s Broom”, from Only Fools and Horses, where the broom handle and head are successively replaced.
        2. I’m greatly attracted to David Lewis2003’s solution2004 to the Hobbesian version of the Ship of Theseus thought experiment2005, but need to consider alternative solutions that don’t depend on Perdurantism2006, and whether this case is really relevant to personal identity.
          • Is there anything special about artifacts2007 that makes identification arbitrary or a matter of convention2008, while the continued identity of a person2009 (from the first-person perspective2010, whatever society2011 – which only has a third-person perspective – may say) is not arbitrary?
          • Organisms2012 – it is said – do replace all their parts in the course of their lives, yet we are sure that the organism persists. Also, the matter that is lost and replaced are not “parts” in the way that planks of a ship are parts. It’s only in transplant2013 surgery when parts properly so-called are replaced.
          • However, is there a fact of the matter whether the repaired ship or the reconstructed ship is the “true” ship?
          • The minimalist case is interesting because it presses our intuitions. Personally, I don’t think half or any large part of an artifact2014 can be replaced while the thing remains the same, but this may just be a prejudice. Habituation comes into consideration – just as assimilation of new matter is important to organisms2015. If we become habituated to some major change in a building, say, then we may agree that it has persisted2016. Then we may become habituated – over generations – to the replacement of the other half. Then – if persistence is identity-preserving – we must be prepared to say – given the logic of identity2017 – that the original building is identical to the current one, even if it looks nothing like it.
          • I have had such a conundrum with my house, where it was decided to rebuild the front and most of the rear walls, and the “Trigger’s Broom” variant of the Ship of Theseus paradox was mentioned by a mortgage adviser.
          • As discussed in the Note on artifacts2018, Eastern traditions are much less fussy about material continuity in the persistence of buildings. See "Han (Byung-Chul) - Shanzhai: Deconstruction in Chinese".
        3. Returning to the specific case of the Ship, and generally where individuals2019 lose parts2020, we need to consider what the status of the lost part is:-
          • When a bicycle is disassembled with the intention of reassembling it again later, its parts are not released but merely dispersed and it becomes a scattered object2021.
          • However, when an object loses a part in the normal case of wear and tear, that part – unless the artifact can be mended by having the part re-attached – is not dispersed but is returned to the environment for use elsewhere and is no longer associated with the object of which it once formed a part.
          • The same can be said where parts – in particular, planks – are removed and replaced. The ship (in this case) no longer has a lien over them.
          • If this account is correct, it solves Hobbes’s problem of the Ship of Theseus without the need for perdurantism2022, though this theory of persistence2023 may still be useful for other puzzles of fission2024.
  3. Christian Materialism2025
    1. The form of materialism2026 I have in mind is that we human beings consist wholly of matter2027, without the need to posit a soul2028 to ensure our post-mortem survival2029 and, in particular, our posited resurrection2030.
    2. I will also discuss those Christian philosophers who are dualists or hold other non-materialist accounts of human identity, and who resist Christian Materialism2031.
    3. Obviously, no Christian with any claim to orthodoxy believes that all persons2032 are essentially2033 embodied – as God is, and presumably angels are, taken to be persons and immaterial.
    4. I also suppose that Christians may differ as to what they think of as the intermediate state between death2034 and resurrection2035 (ignoring those that think that the future state is incorporeal2036).
    5. They may also differ as to whether they think matter requires animating2037 by the breath of the Spirit in a literal sense.
    6. List of Christian Materialists:
      1. Lynne Rudder Baker
      2. Kevin Corcoran
      3. Hud Hudson
      4. David Hershenov
      5. Trenton Merricks
      6. Nancey Murphy
      7. Peter Van Inwagen
    7. Remarks on other selected contemporary Christian Philosophers
    1. Religion2039
      1. This Note has to do with the – historical and contemporary – ways in which religious questions and commitments have influenced philosophers in their discussions of Personal Identity.
      2. I disagree fundamentally with philosophers such as Alvin Plantinga that belief in God is “epistemologically basic”, but claim that philosophy asks questions that are prior to any others except, possibly, metaphilosophical questions, which are also philosophical, so part of philosophy itself.
      3. Recently (end December 2021) I’ve been reminded of – and briefly investigated – Michael Sudduth, who wrote on this topic (in "Sudduth (Michael) - Reformed Epistemology and Christian Apologetics"), but has since moved away from Calvinism and the Christian faith generally. I intend to look into his reasons, and determine what he thinks of his earlier writings.
      4. But – it seems to me – Christians allow their prior beliefs to constrain what results of their philosophical endeavours are acceptable. Worse; having decided on pre-philosophical grounds what to believe, they use the techniques of philosophical argument to bolster these beliefs. They don’t follow an argument where it goes, but argue in a casuistical basis.
      5. Also, despite there being little agreement on Christian doctrine amongst the various denominations and sects, philosophers seem to find the arguments they’ve dreamt up for their own sectarian beliefs the most convincing.
      6. This applies to “damnable doctrines” such as Hell, which seems to be discussed academically and unselfconsciously on the pages of Faith and Thought, just as much as to comfortable ones like Heaven.
      7. There has been some concern amongst Christian Materialist2040 Philosophers as to whether heaven is a “place we can get to”. I’m not aware of the same concern for Hell, nor of just what metaphysics of the human person2041 is needed to allow eternal conscious torment.
      8. Locke2042’s thoughts on personal identity were initially motivated by worries about the metaphysics of Resurrection2043 – seen as necessary in order to right the wrongs inflicted on the righteous in this life – as well as theodicy and other forensic2044 concerns.
      9. I’ve not given much time to considering the philosophy motivated by religious beliefs antithetical to Christianity, other than to Hindu and Buddhist2045 thought on the topic of Reincarnation2046 and Karma.

Concluding Remarks
  1. Having now discussed both Animalism and the Constitution View, we can now in our next Chapter2047 turn to the arguments against these views, starting with those against Animalism.
Chapter 8: Arguments against Animalism2048

Abstract
Chapter Introduction2049
  1. There is effectively a 1-1-match between this Chapter and the Note Animalism – Objections2050, though I imagine that this Chapter will be more focussed and less exploratory than that Note.
  2. The main objections to Animalism are those of incredulity to the Animalist claim that “matters of psychology are irrelevant to personal identity”, when most philosophers have thought – and still do think – that it’s constitutive of it. As I’ve said previously and often – this is to confuse What Matters to us with What we Are.
  3. Then we have the Brain Transplant Intuition – that we go with our brains. It is very difficult to resist this intuition – for reasons I’ve given under my Note on Forward Psychological Continuity, though Eric Olson insists that the Animalist must deny it as a brain isn’t an Organism.
  4. Then, there are awkward pathological cases where it’s not clear quite what the animalist should say. I’ve collected these under the Note on Dicephalus2051.
  5. Finally, there’s the question of what’s going on during Pregnancy2052, which Animalists have allegedly failed to address. Is the Fetus2053 a part of the mother? If so, we’d have a case of Fission at birth. Traditionalists would deny this, so the problem ‘goes away’, but it needs to be considered carefully from the actual biology (covered in the previous Note and those on Zygotes2054 and Embryos2055).
  6. I’ve also included the topic of Abortion2056 as part of this Chapter, though it’s maybe either misplaced, or not sufficiently relevant.

Main Text
  1. Arguments against Animalism2057
    1. A convenient starting-point for reviewing objections to Animalism is in "Olson (Eric), Etc. - Abstracta Special Issue on 'The Human Animal'", reviewed in this Note2058.
    2. The most obvious objection is to the initial implausibility of Animalism’s basic contention that – because I was once a fetus2059 and may one day be a vegetable2060 – psychological continuity2061 or connectedness2062 can have nothing to do with my persistence criteria2063. Animalists can be accused of not taking persons sufficiently seriously2064.
    3. Additionally, Animalists are said to have a “corpse problem2065”. Because I am co-located with my “corpse-to-be”, the Animalist is hoist by his own petard, in that he has the analogue of the “fetus problem2066” he alleges against the Constitution View2067.
    4. A spin-off from the alleged irrelevancy of psychology for human identity is the need to deny the Brain Transplant2068 intuition – that “I go where my brain goes”. The Transplant Intuition has been defended from an animalist perspective in "Madden (Rory) - Human Persistence".
    5. In "Olson (Eric) - Human Atoms", Olson mentions four “favourite objections”, though these strike me as being rather feeble, and I suspect them of being straw men:-
      1. If you were an animal, you would be identical with your body (or at any rate with some human body). But no human body can think or feel or act, as you can.
      2. Persons and animals have different persistence conditions: the organism that is your body could outlive you (if you lapsed into a persistent vegetative state), or you could outlive it (if your brain were transplanted and the rest of you destroyed). But a thing cannot outlive itself.
      3. Persons and animals have different criteria of synchronic identity: any human animal could be associated with two different persons at once (as cases of split personality). Thus, no person is an animal.
      4. These experiences – the ones I am having now – are essentially mine. But they are only contingently associated with any particular animal. Hence, I have a property that no animal has.
    6. The above paper is intended, however, to rebut the argument against animalism in "Lowe (E.J.) - Subjects of Experience", which have the unlikely consequence that we are “mereological atoms”.
    7. "Hudson (Hud) - I am Not an Animal!" argues against animalism via the “Elimination Argument”, which I’m yet to investigate and understand. "Bailey (Andrew M.) - The Elimination Argument" seeks to rebuff it.
    8. Elselijn Kingma has accused animalists of not taking Pregnancy2069 as an important issue for Animalism. She thinks that the Fetus2070 is a part of the mother. My view is that animals can share parts, as seems to be necessary for Conjoined Twins2071, which are another supposed objection to animalism if it could be successfully argued that there is only one animal in these cases.
  2. Dicephalus2072
    1. There are several related pathological conditions in which the number of animals2073 and the number of individuals2074 may fail to align. In order of increasing severity of the “condition”:-
      1. Conjoined Twins: "Wikipedia - Conjoined Twins". Varies from a fairly loose conjunction of individuals, who may be separated, to more severe forms with shared organs and limbs. This article is of interest not least because it discusses the issue of fission2075 versus fusion2076, with the latter now the favourite suggestion.
      2. Craniopagus: "Wikipedia - Craniopagus Twins". The babies are joined at the skull. Contrast the case where both twins are persons2077 with the degenerate case "Wikipedia - Craniopagus Parasiticus".
      3. Polycephaly: "Wikipedia - Polycephaly". Animals or humans with apparently more than one head. Dicephaly is the limiting case. Usually an extreme version of conjunction. See, for example, BBC - Rare two-headed snake. Note that the description “two headed” seems more plausible in the case of reptiles than humans, given their presumed reduced mental experience. That said, given that dicephaly is – according to this article – a case of incomplete fission2078 of an original single individual – this descriptive decision may be correct.
      4. Diprosopus: "Wikipedia - Diprosopus". Animals, including humans, with two faces. There may be one or two brains, but only one skull. The important thing – and what differentiates the diprosopus from the dicephalus – is that there is much less duplication of body parts, so it is very much two brains sharing one body – though it can also be the relatively superficial – though tragic – case of one brain, one body and two faces.
    2. All these situations – and in particular the paradigm case of dicephalus, wherein it appears that we have a human animal2079 with two heads – are often cited as a prima facie problems for Animalism2080.
    3. The claim is that while we have multiple persons2081, we only have a single animal2082, so the animalist2083 claim that persons are numerically identical to their organisms2084 is false.
    4. Of course, the above claim is somewhat bald. Animalism2085 – at least in the form expounded by Eric Olson – has no truck with psychology2086 as necessary for our persistence2087. While Olson often refers to “people” this is just shorthand for “some of us2088”, rather than “persons”, the plural of person2089.
    5. So, if the animalist claim is that we are human animals, then the question is – in the case of dicephalus and related conditions – how many of us2090 are present, and how many human animals2091 are present. Animalism2092 need the numbers to be equal.
    6. The cases under consideration have the advantage over standard Thought Experiments2093, in that they are real-life cases. What is actual must be possible, and a standard argument against TEs is thereby avoided, namely that some of them, at least – whatever our intuitions may say – may not in fact be possible2094 because the TEs are under-described.
    7. That said, there’s still a temptation to push the boundaries, and to consider cases in this general area that are not actual, yet are not quite as science-fiction as the usual TEs2095.
    8. Cases of dicephalus are fairly rare, and often one “twin” is degenerate (contrast "Wikipedia - Craniopagus Parasiticus" with "Wikipedia - Dicephalic Parapagus Twins") so it’s not clear that we have two persons2096 or two of “us2097”. However, the case of the dicephalus twins2098, Abigail and Brittany Hensel, where one body appears to be coordinated by two brains (see "Wikipedia - Abby and Brittany Hensel") shows that this is not necessarily the case. Here we definitely have two persons2099, but maybe only one animal2100. This is probably a real-life case of either incomplete fission2101 or of fusion2102.
    9. There are two issues with these cases:-
      1. How should they be best described?
      2. How should the animalist respond?
    10. Description:
      1. I need to research this further, but it seems to me that we have a sliding scale of pathological cases – from that of Siamese twins (who are often fairly loosely connected, and can often be surgically separated) to the much more extreme cases of diprosopus.
      2. I presume, also, that we can have both fission2103 or of fusion2104.
      3. In the case of (incomplete) fission2105, the twins2106 will be identical, as the situation is one where the twinning process has not completed.
      4. But (I imagine) we can also have a case of fusion2107, where the twin-embryos2108 – whether identical or fraternal – that were separate have subsequently partially fused. Note that if the trins are identical, we will have had a case of fission2109 followed by fusion2110. I don’t know whether there have been any actual cases of this.
    11. Response:
      1. The most likely response from the animalist2111 is that the dicephalus is not a single organism2112, but two organisms that share some body-parts.
      2. The force of the arguments in this kind of case depends on “relevant similarity” – if the dicephalus-case is sufficiently similar to the general case, it can be used to show things about the general case. But this claim can be rejected.
      3. In the case of diprosopus, it is more difficult to claim that there are two organisms2113. Now – in practice – there are never two persons2114 either (as in all the 30-odd cases recorded since 1860, the condition has proved quickly fatal, so there were no persons2115 present). But this might not always be so. So, Lynne Rudder Baker might claim that the rudimentary persons were indeed persons2116 – as there was a possibility that they would develop into robust persons. Failing that, it might be the case in the future there is a case where the diprosopus survives to develop personality2117.
  3. Pregnancy2118
    1. This topic sounds utterly tangential to my research interests, but I’ve included it because Elselijn Kingma complained – in "Kingma (Elselijn) - BUMP: Better Understanding the Metaphysics of Pregnancy (B1)" – that "Olson (Eric) - The Human Animal - Personal Identity Without Psychology" contained not even a footnote on the topic of pregnancy and the metaphysical issues it raises, in particular for animalism2119.
    2. Following Kingma, the discussion will focus on the relationship throughout pregnancy between the mother and the fetus2120. The key question is whether the fetus is a part of the mother or is a separate individual2121 inside her. Additionally, we need to consider whether this status changes during pregnancy.
    3. I have to admit immediately that (contra Kingma) – my initial view is that the relationship is more “bun” (the “container model”) than “bump” (the “part model”), though this separation seems clearer as pregnancy progresses, following the implantation of the Zygote2122 (prior to which there is clear separation).
    4. It looks like Kingma’s view is of pregnancy as a case of fusion2123 followed by fission2124.
    • Zygote2125
      1. A Zygote ("Wikipedia - Zygote") – is the immediate post-fertilisation product.
      2. In single-celled animals the zygote may constitute the entire animal.
      3. I once had “necessarily asexually-reproducing” here. The Wikipedia entry has it that such single-celled organisms reproduce asexually by mitosis. But if all such organisms arise in this way, in what way are they correctly described as “zygotes” which involves the “yoking together” of two distinct and differentiated gamete cells? Is it possible that some organisms reproduce both sexually and asexually? And – if so (as I believe) – is it true in this case?
      4. In humans, the zygote develops by division until it implants as the embryo2126. Until then it is called a pre-embryo ("Wikipedia - Pre-embryo"); a morula (Wikipedia: Morula) after 4 divisions – 16 blastomeres – and a blastocyst ("Wikipedia - Blastocyst") by the 5th day. The implanted embryo is called a fetus2127 after 11 weeks.
      5. In the philosophy of personal identity, the question arises when the human being2128 or the human person2129 arises. Additionally – and relatedly – was I2130 ever a zygote (or an embryo2131, or a fetus2132).
      6. Most philosophers agree that a zygote isn’t a person2133, because it does not possess the appropriate psychological2134 attributes.
      7. Many philosophers contend that a human zygote isn’t a human being2135 either – in that it hasn’t the appropriate set of organs.
      8. In addition, the question whether I was ever a zygote is complicated by two considerations:-
        1. Twinning2136: is a special case of fission2137. Why should the zygote be numerically identical to one – rather than the other – of a pair of monozygotic twins? Modal2138 considerations apply if I am in fact not a monozygotic twin.
        2. Difference over the definition – or maybe ontological2139 category – of “person2140”. Some philosophers insist that an individual2141 can be a person2142 on account of its expected future capacities2143, or actual or once anticipated past capacities, irrespective of its present capacities.
    • Embryos2144
      1. In humans, the immediate post-fertilization product – the zygote2145 – develops by division until it implants as the embryo ("Wikipedia - Embryo"). It is called a fetus2146 after 11 weeks.
      2. In the philosophy of personal identity, the question arises when the human being2147 or the human person2148 arises. Additionally – and relatedly – was I ever an embryo?
      3. Most philosophers agree that an embryo isn’t a person2149, because it does not possess the appropriate psychological2150 attributes2151.
      4. Many philosophers contend that a human embryo isn’t a human being2152 either – in that it hasn’t the appropriate set of organs.
      5. In addition, the question whether I was ever an embryo is complicated by differences over the definition – or maybe ontological category – of “person2153”, as was noted in the discussion of Zygote2154.
    • Fetuses2155
      1. In humans, the implanted embryo ("Wikipedia - Embryo") is called a fetus ("Wikipedia - Fetus") after 11 weeks which remains the favoured term of reference until the individual2156’s birth – whether full-term or induced – when it is referred to as a neonate (or a baby!). Referring to the fetus as a “baby” is tendentious but common in the pro-life movement.
      2. Fetuses feature a lot in the philosophy of personal identity. Are they persons2157, or merely potential persons, given that they probably fail the conditions for personhood2158?
      3. Was I2159 ever a fetus? At least, was I an early-term fetus?
      4. This latter question is addressed by animalists2160 – who think that we were indeed fetuses – as a poser for supporters of the psychological view2161 (or constitution view2162) of personal identity (since fetuses lack psychological connectedness2163 to adult persons, and even lack psychological continuity2164 to them on the presumption that early-term fetuses lack all psychological experience).
      5. But, it’s also alleged as a problem for animalism2165, or at least a matter that has not been properly addressed by them. What was the relation of the fetus to its mother. Was the mother merely a container, or was the fetus a proper part2166 of the mother, who thereby fissioned2167 on the baby’s birth? See Elselijn Kingma and "Finn (Suki) - Bun or bump?".
      6. It strikes me that the “fission at birth” view is too implausible – the fetus – especially near term – certainly looks like an independent being that’s being hosted on life support by the mother. So, maybe we can come to a compromise understanding whereby the fissioning2168 happens earlier, though the separation would clearly be more vague2169 than the cutting of the umbilical cord.
    • Abortion2170
      1. The morality of abortion is a large and important issue, but is not my major concern except insofar as it impinges on the topic of Personal Identity.
      2. Our views on Personal Identity will have an impact on our views of the morality of abortion, though not in any straightforward manner.
      3. More importantly – and regrettably so in my opinion – views on the morality of abortion can have an impact on one’s views of personal identity. This is the wrong way round, and violates the fact / value distinction. While ethical, political or religious2171 views might influence our preference for certain metaphysical views, they should not constrain our actual beliefs, which should be responses to how things are, and to which our other beliefs should conform, however disappointing that might be.
        1. This remark assumes that there is a “way things are” that is independent of the desires and motivations of human beings. This is denied by – for instance – Yuval Noah Harari; but see – for a robust realist view – "Blackburn (Simon) - Truth: A Guide for the Perplexed".
        2. I do not wish to deny that our ethical, political and religious views can be responses to how things are, just that they were often responses to how things seemed to us – or to people we respected – at formative times of our lives, and then got entrenched and we remain impervious to evidence to the contrary.
      4. I’ll leave further discussion for now. Enough to say that I’ll not intend to wade in too far into this moral morass, though I will need to review the foundational papers on the moral implications of abortion.
      5. The note on Pregnancy2172 raises questions of what (to put it rather positively) abortion actually achieves. According to the standard “container model”, abortion kills a distinct, though temporarily dependent, being. However, according to the “parthood model”, abortion only removes a part of the whole (removing the so-called “foster” from the “gravida”: see "Kingma (Elselijn) - Were You Part of Your Mother?").

Concluding Remarks
  1. Having now discussed the arguments against Animalism, we now in our next Chapter2173 turn to the arguments against the Constitution View.
Chapter 9: Arguments against the Constitution View2174

Abstract
Chapter Introduction2178
  1. Like the previous Chapter, there is mostly a 1-1-match between this Chapter and a single Note – in this case Constitution View – Objections2179. That’s because Olson’s Master Argument – which is both an argument for Animalism and an objection to the Constitution View – has its own Note but appears in Chapter 7.
  2. The Note on Holes & Smiles2180 is relevant because it illustrates how a property – like the Cheshire Cat’s smile – cannot exist in the absence of the infrastructural body that makes it possible, nor can they be transferred from one body to another and remain the same property. So, I would argue, a First Person Perspective is the property of a particular human body, and cannot be transplanted from one body to another.

Main Text
  1. Arguments against the Constitution View2181
    1. The two obvious issues are:-
      1. The “too many minds” objection (otherwise known as the “thinking animal argument2182”), and
      2. The “fetus problem2183”
    2. Thinking Animals2184
      • In saying that an Individual2185 is a human animal2186 and that also that that Individual is a person2187 that is ontologically distinct from, and merely constituted by2188, the human animal, Eric Olson argues that we have too many thinkers and therefore the constitution view2189 is false.
      • I don’t like this argument, in that the form would prove too much. I see analogies with various mereological2190 arguments:-
        → Peter Unger’s argument that “there are no ordinary things”,
        → The Sorites2191 arguments against the existence of material objects with parts, and maybe with
        → Tib/Tibbles2192, and
        → Dion/Theon2193
      • All these arguments seem to have the same form – there are alleged to be too many co-located items, leading to the denial of some seemingly obvious premise.
      • Yet maybe I accept a version of this in disliking immaterial souls2194 (again, too many thinkers – if the brain2195 thinks, why do we need a soul that thinks as well). However, the degree of ontological2196 distinctness between “the self2197 and its brain2198” is greater than that between the person2199 and the human being2200 that (maybe temporarily) constitutes2201 it. I will reconsider this collection of arguments in due course.
    3. Fetus Problem2202
      • This is the question whether I2203 was ever a Fetus. According to the Constitution View2204, I was not, as the Fetus had no First Person Perspective2205 (FPP), not even a rudimentary one, and since the FPP is constitutive / individuative of me.
      • But, if I was not the Fetus, where did I2206 come from?
      • I’m not hugely impressed by this argument either. It’s also a problem for Animalism (it is said) – is the early fetus an animal2207? Was the fetus a proper part of the mother? See "Kingma (Elselijn) - Were You Part of Your Mother?".
    4. So, should I accept the Constitution View2208? I think not. I am an animal2209, and objections to Animalism2210 can be overcome. The whole idea of Constitution2211 as conceived of by the CV is very odd, and the CV was invented to provide the hope of resurrection2212. I need to justify these assertions, of course!
  2. Holes & Smiles2213
    1. I was unsure whether to title this Note as “Holes” or “Smiles”, so decided on a combination. While only the former is a recognised philosophical topic, the latter is a recognised as a problem for the Constitution View2214.
    2. The relevance to my Thesis is somewhat tangential, but the idea is that there are features2215 of other things that are – most likely – not separable entities but which still have persistence conditions2216. It makes sense to ask whether a particular hole is the same hole as it was a week ago, or a particular smile the same smile as a few seconds ago – smiles “wear thin” if the photographer takes too long. But neither holes nor smiles can exist separately to their host. The Cheshire Cat’s smile is not to be taken at face value.
    3. I see an analogy with this situation and persons2217 or First Person Perspectives2218. Often, when a non-philosopher doubts whether someone is the same person2219 as they had been previously, they are thinking of a radical personality change. A personality2220 is like a very complex and enduring smile – a property2221 of something else. It cannot exist on its own, disembodied2222, or pass from one body2223 to another.

Concluding Remarks
  1. Having now discussed the arguments against both Animalism and the Constitution View, we now in our next Chapter2224 turn to the question of Thought Experiments in general, and how they bear on this topic in particular.
Chapter 10: Thought Experiments2225

Abstract
Chapter Introduction2226
  1. In this chapter we will consider all the usual suspects, as itemised in the list of Notes and text below.
  2. This is a long Chapter, and starts with a general discussion of Thought Experiments2227 – though further consideration will need to be given at the end of the Chapter in the light of the discussion of examples – because some philosophers maintain that our Concepts were not designed to work in situations far from those in which they were developed. This objection does – in this context – seem to suggest that questions of Personal Identity are merely Semantic rather than matters of fact. So, it’s worth giving the method a go, to test our Intuitions2228 – though I think these should be modifiable in the light of this theoretical experience as well as well as guiding our interpretation of these TEs.
  3. The TE that I have found the most useful – and the first I came across – is Bernard Williams’s Future Great Pain Test2229, as it forces us to take maybe glib intuitions seriously.
  4. It is to be noted that some – for instance Commissurotomy – are more actual experiments than thought-experiments, though quite a lot of armchair thinking is involved in working out their import. Consequently, I’ve made this distinction in the list below. We start with the ‘actuals’.
  5. Clones2230 are relevant in distinguishing Identity from exact Similarity, and for confuting those who think that we are Information.
  6. This leads directly on to Fission2231, including a natural example thereof, namely Twinning2232, which may be a special case of Duplication2233. This whole nexus is important to the Reduplication Objection2234 to certain putative cases of persistence, where there is, or can be, more than one Survivor.
  7. Pregnancy and birth in placental mammals – as we discussed in Chapter 8 – might be described as Fusion2235 (when the Zygote implants) followed by Fission (when the umbilical cord is cut).
  8. Organ Transplants2236 are clear – though maybe not very exciting – examples of Fusion involving Human Animals, which nevertheless need to be given an account by Animalism.
  9. Otherwise, it is not clear whether there are any further naturally-occurring cases of Fusion relevant to personal Identity. The obvious possibilities are the pathological cases of conjoined twins covered by my Note on the extreme case of Dicephalus, though it’s unclear whether these are cases of incomplete Fission or incomplete Fusion.
  10. Finally under this discussion of ‘natural’ TEs are Psychopathological2237 cases. I have a general Note on Clinical Observations2238 to cover this area, with specific Notes on Commissurotomy2239 and Multiple Personality Disorder2240. Both are putatively examples of Fission on the Psychological View, but of little concern to Animalism. Multiple Personality Disorder might be better situated in Chapter 9 as a critique of the idea of an individuating First-Person Perspective.
  11. We then move to the various ‘artificial’ TEs, starting with Brain State Transfers2241. Then come Brain Transplants2242, which come in various forms. We need to distinguish Whole-Brain Transplants (WBTs) from single or double Cerebrum transplants, and these from brain-tissue transplants. Brain Transplants are vastly more difficult to perform than Head Transplants, which have allegedly been around the corner for some years. All these options are covered by the same Note but I have another on Brains in Vats which fall into the same general area.
  12. The above TEs maybe shade off into Siliconisation2243, which is the gradual replacement of organic brain tissue by computer chips, though what can be deduced from such TEs without begging lots of questions is unclear.
  13. For a bit of light relief, I’ve added a general consideration of Dracula2244, particularly of the various metamorphoses he’s supposed to be able to undergo.
  14. We then get to my favourite – Teletransportation2245, which – at best – I take to be an example of Replication2246 (which may be the same as Duplication, only more tendentiously-termed).
  15. Finally, I’ve added the hopes of Transhumanism2247 as a coda to the Chapter, though it might be combined with the previous section. Transhumanism is a very wide topic, and is different to the other notions, in which we are and remain wholly organic. I’ve divided these hopes into those that are ‘nearby’ and those that are ‘far off’.
  16. The ‘nearby’ hopes include Chimeras2248, which involves a kind of Fusion of animals of different species; either xenotransplants – which have been ‘actual’ for many decades – or the importation of human DNA into non-human animals for organ forming, or other reasons. The latter raise questions about the Ontological and Moral status of the DNA-recipients.
  17. The second case in this section is that of Cyborgs2249, which have inorganic somatic augmentation; this may also be ‘actual’ to a limited degree, though not to the degree sought by the Transhumanists.
  18. Finally, we have the less imminent hopes – in particular Uploading2250 to Computers2251 – which I find very unlikely, and not even desirable. But if it turns out to be possible, we might end up as Androids2252; just adding a robot body to a computer mind. If uploading turns out to be practically or metaphysically impossible, we might still have Androids completely discontinuous from human beings, though modelled on them.

Main Text
  1. Thought Experiments2253
    1. In general, I’m in favour of using thought experiments in philosophy.
    2. However, I’d like to consider – following "Wilkes (Kathleen) - Real People: Personal Identity Without Thought Experiments" – whether some thought-experiments in pursuit of clarifying issues in personal identity
      1. Propose impossible scenarios,
      2. Trade on under-specification, or
      3. Put us in circumstances where our concepts2254 no longer apply (or where we could no longer play the appropriate language-game using them – see "Gale (Richard) - On Some Pernicious Thought-Experiments").
    3. Sometimes our intuitions2255 are unreliable as to the truth or possibility of what we intuit.
      1. Some doubt the possible phenomenal consciousness2256 of artificial systems2257, however complex, but is this anything other than a fallacious argument from personal incredulity?
      2. Descartes2258 argued for the real distinction2259 between mind2260 and body2261 by thinking he could imagine their separation, but could he really?
      3. Sometimes, our intuitions2262 may give us no clue one way or the other, or only a gentle lead (as Williams seems to be suggesting in "Williams (Bernard) - The Self and the Future").
    4. "Snowdon (Paul) - Personal Identity and Brain Transplants" gives a helpful critique of Wilkes’s and Johnston’s (see "Johnston (Mark) - Human Beings") arguments against thought experiments.
    5. "Wilson (Jack) - Beyond Horses and Oak Trees: A New Theory of Individuation for Living Entities" thinks that TEs should be avoided where possible, and real examples used. At least in actual circumstances we know that the situation is possible2263 (“actual implies possible”), and we know, or can discover, all the background conditions.
    6. The trouble is that there may not be enough naturally-occurring situations, or practically or ethically available experimental circumstances, to provide the occasions to put maximum pressure on our concepts2264.
    7. Then again, were our concepts2265 designed to be put on the rack? What would their failure really tell us?
    8. The topic of Transhumanism2266 is replete with TEs, given that the expected advances are yet to take place.
    1. Intuition2267
      1. The topic of Philosophical Intuition is somewhat related to that of Thought Experiments2268.
      2. I decided to give this topic its individual note in response to "Clark (Andy) & Kuhn (Robert Lawrence) - Aeon: Video - Andy Clark - Virtual immortality". Therein, Andy Clark has the strong intuition that we2269 are “patterns in information space2270”, and he specifically contrasts this with the “me, here, now, animal” intuition shared by animalists2271 such as myself.
      3. There are – of course – arguments for animalism2272. Are there corresponding arguments for Clark’s view, or is it a foundational belief, like belief in God has been said to be?
      4. Philosophical intuitions occur in all sorts of philosophical arguments. One central to my own concerns is the “brain transplant2273 intuition” – that “we go where our brains go”. I’m not sure whether to share it or not.
      5. The primary source for this topic is probably "DePaul (Michael) & Ramsey (William) - Rethinking Intuition: The Psychology of Intuition and Its Role in Philosophical Inquiry".
    2. Future Great Pain Test2274
      1. This is a test invented by Bernard Williams in "Williams (Bernard) - The Self and the Future" though the actual terminology seems to be due to Peter Unger.
      2. It is a means of teasing out whether or not we really think – either by Intuition2275 or through some convoluted reasoning – that we will be some future individual2276. It is cashed out in terms of the prospect of “being mercilessly tortured in the morning”.
      3. If we think that the unfortunate individual will be us, our attitude will be qualitatively different to if we think it will be someone else (though maybe there are exceptions – mothers and their children, maybe – but even there, it may depend on what is to happen – reference Winston Smith and the rats in Room 101 in 1984 – Wikipedia: Ministries of Nineteen Eighty-Four - Room 101).
      4. Of course, while this may tease out what we think will be the case in any situation, this doesn’t imply that it will be the case. Lots of people think that teletransportation2277, were it to be technically feasible, would be a form of travel, rather than death2278 and duplication2279. I happen to think their view mistaken. But it either is or isn’t irrespective of anyone’s view. If I was forced to go through the procedure and found my First Person Perspective2280 persisted – as only I could know – I’d change my mind, and my philosophy of PID.
      5. In my view, this is important when alloyed to the FPP2281 in rebuffing Parfit2282’s view that identity doesn’t matter2283 in survival2284.
  2. Principal Examples - Natural
    1. Clones2285
      1. We need to contrast two forms of cloning:-
        1. The metaphysical possibility of atom-by-atom cloning.
        2. Biological cloning which uses existing structures, and interferes unnaturally in a fairly minor way.
      2. I am not concerned (as far as my thesis goes) with the medical ethics of biological cloning. There is never any suggestion that clones in this sense are logically identical, any more than so-called identical twins are.
        1. That said, there is something of a link – in the metaphysics, if not the ethics – with a critique of Parfit2286’s “identity doesn’t matter” account of personal identity.
        2. Since my clone has my (innate) properties and capacities, Parfit might think I have all that matters (or much of what matters) to me if my clone, rather than I myself, survives and I do not.
        3. The following papers seem to follow this approach:-
          → "Agar (Nicholas) - Cloning and Identity", and
          → "Brennan (Andrew) - Survival"
        4. In particular, the paper by Andrew Brennan suggests that persons might be types rather than tokens which – while an interesting proposal – is about as far from the truth as you can get. Tokens suffer, types do not, qua types. One token of the same type may be luxuriating while another is being tortured.
      3. What I am interested in is whether atom-by-atom cloning (where the original exemplar is destroyed) can ever preserve identity2287. Because of the logical possibility of the non-destruction of the “original”, I take it that it cannot. This argument depends on modal logic2288 – and the rejection of the possibility of contingent identity2289. For further discussion, see under Teletransportation2290.
      4. We may also need to discuss causality2291 to further explain why identity is not preserved. This is particularly the case when discussing Dean Zimmerman’s Falling Elevator model of resurrection2292, where – it is supposed – there is a causal connection between the expiring body2293 and its clone in the next world.
        1. Is it agreed that this is indeed a clone, as it seems to be, or …
        2. Is this body supposed to be the same body, created by supernatural processes by immanent causation – albeit across space and maybe other dimensions – much as a body at one time is self-identical to a body at a later time by natural metabolic processes?
        3. This would imply – in the absence of perdurantism2294 – the non-identity of the living organism2295 and the post-mortem corpse2296.
        4. See "Hershenov (David) - Van Inwagen, Zimmerman, and the Materialist Conception of Resurrection" for the argument that Zimmerman’s resurrected body is a duplicate2297.
        5. For Zimmerman’s arguments, see:-
          → "Zimmerman (Dean) - The Compatibility of Materialism and Survival: The “Falling Elevator” Model", and
          → "Zimmerman (Dean) - Bodily Resurrection: The Falling Elevator Model Revisited".
      5. The very term ‘Cloning’ seems to deny the possibility of the logical identity of an original and its clone. It implies that there are two things – the original and the clone – and two things can never be one thing, so cannot be logically identical2298.
    2. Fission2299
      1. Fission is important in the philosophy of identity – especially of personal identity – in that it provides many thought-experiments2300 (TEs), and some real-life examples, that test out the various theories.
      2. The paradigm case of Fission is of two half-brain2301 transplants2302.
        1. It is difficult to consider this case without slipping into the “psychological view2303”. Each hemisphere seems to preserve what matters2304 to the fissioned individual2305, and a perdurantist2306 account can maintain identity2307 after fission.
        2. An alternative account is to claim that the two half-brains2308 always were separate persons2309 (and Roland Puccetti has maintained that they are separate persons, in all of us, even prior to the commissurotomy2310 in this TE and in everyday life), in a way slightly different from the usual Lewis2311 view of non-identical spatially-coincident2312 individuals2313 (because the hemispheres aren’t spatially coincident, though the shared body2314 is).
      3. We need to consider how the original person2315 was unified2316. We can press the realism of the thought experiment2317 by asking how important are the spinal cord and Peripheral Nervous System generally to the psychological2318 integrity of the human organism2319? The case of dicephalus2320 twins may be relevant – where the functions of walking and even typing seem to be carried out perfectly adequately despite the coordinated limbs being controlled by different brains2321.
      4. We also need to consider whether the two half-brains2322 continue to constitute a single scattered2323 person2324, just parked in separate bodies2325. A single embodiment is important because it ensures synchronisation of experience, and external communication between the hemispheres (in the absence of the usual internal communication across the corpus callosum). Presumably, this could be achieved in other ways.
      5. We can – as in "Dennett (Daniel) - Where Am I?" – imagine a Brain in a Vat2326 linked by radio transmitters/receivers to a remote body2327.
        1. The brain2328 is part of the body2329 – so a single physical thing can be spatially discontinuous.
        2. Why, if A fissions into B and C, can’t we consider B & C to be parts of the same person?
        3. They could fight / argue … but so can someone in two minds2330 about things.
        4. What if one killed the other?
        5. They would have different perceptual experiences, but so (presumably) does a chameleon, with its eyes pointing in different directions (and sheep and other herbivores, and fish, with eyes on the sides of their heads).
      6. I need to consider in detail what is supposed to be going on in fission – ie. press the original thought experiment2331: there needs to be segregation / redundancy prior to separation – this can happen over time (or we would have plain duplication2332). At some point the person will split into two, with incommunicable consciousnesses2333 (cf. Locke2334’s day-person and night-person).
      • Duplication2335
        1. Duplicate objects are – to use the definition in "Sider (Ted) - Naturalness, Intrinsicality, and Duplication" – “exactly similar, considered as they are in themselves”. That said, it misses off the question “which is the original?”. A “duplicate” is – by implication – a copy of the original. I don’t think there’s the same implication in the term “double”, though saying that person X is person Y’s “double” – while it doesn’t imply precedence of one over the other – doesn’t even imply exact similarlity2336 – just that one might be mistaken for the other (and maybe not even that, quite).
        2. There is considerable overlap between this topic and two other topics:-
          1. Replication2337, which is really the same thing (though not restricted to a mere doubling), and
          2. Reduplication Objections2338
        3. The motivation for this discussion – and those above – comes mainly from the above (Re-)duplication objections – where some putative change appears to preserve identity, but cannot for logical reasons2339.
        4. In Teletransportation2340, something distinguishes the forward going psychological continuity2341 of the original and the initial backward-looking psychological discontinuity of the duplicate, but I don’t know what it is. Handwavingly, it’s the “wrong sort of causal chain2342”, and it’s this causal-chain failure that defeats such Thought Experiments2343.
        5. If I were to accept Lewis’s perdurantist2344 thesis, the straightforward objection to the identification of the duplicate with the original is undermined – they simply share stages. However, there are still causal chain2345 problems to address, and those of physical continuity2346.
        6. While cloning2347 falls under this head, there is no identity2348 preservation, even under a perdurantist2349 thesis, as there are no shared stages, just shared genetic material.
        7. Also, philosophical Zombies2350 are supposed to be physical duplicates of their conscious2351 analogues. But this is a TE that cannot really be conceived of.
      • Twinning2352
        1. There are two forms of twinning:-
          1. Dizygotic twinning ("Wikipedia - Dizygotic (fraternal) twins"), wherein two separately-fertilized eggs simultaneously develop (to term), is uninteresting from the perspective of my Thesis.
          2. Monozygotic Twinning ("Wikipedia - Monozygotic (identical) twins") wherein a single fertilised egg splits into two separately-developing fetuses2353 is a special case of Fission2354.
        2. Monozygotic Twinning is an important factor – modally2355 even when there is no twinning in fact – in the topic of Personal Identity.
        3. The possibility of monozygotic twinning is said to be the reason why no existing individual2356 can be numerically identical to an earlier zygote2357:-
          1. A zygote is capable of fissioning into two qualitatively identical, but numerically distinct daughter zygotes.
          2. So, a particular zygote has the modal property of developing into two monozygotic twins.
          3. Given that it cannot be identical to both of them – see the Logic of Identity2358 – it cannot be identical to either (given that they are exactly similar there is no reason why one should be its closest continuer2359 rather than the other).
        4. Conjoined-twinning would appear to be a case of fusion2360 (maybe with prior fission2361). This case is also be touched on in the discussion of Dicephalus2362, which is the most extreme case of conjoined twinning.
      • Reduplication Objections2363
        1. The problem of reduplication relates to a systematic problem in the logic of identity2364, that of fission2365, whether actual or potential.
        2. I have another Note in this general area, that of Replication2366. Is this the same issue? The latter Note will deal with what Replication is and how it differs from Identity, while this Note will deal with the problems it causes for potential solutions to the problem of Personal Identity.
        3. So, this Note is about an objection. An objection to what?
        4. The case is probably best put in "Seibt (Johanna) - Fission, Sameness, and Survival: Parfit’s Branch Line Argument Revisited". Reduplication objections arise in various Thought Experiments2367, especially:-
          1. Teletransportation2368: you couldn’t survive because either the information2369 can be used multiple times, or the original “you” might be left behind (the “Branch-line” case).
          2. Brain-state Transfers2370: you cannot be the mental contents2371 of your brain2372, because they could be copied onto multiple “wiped” recipient-brains. This might seem to defeat the Psychological View2373.
          3. Cerebrum Transplants2374: You cannot be a brain2375, because idempotent cerebra2376 (or maybe half-brains) could be donated to two recipients, who would have equal claims to be your closest psychological continuer2377.
        5. These responses to the TEs2378 argue that we would not survive2379 certain the vicissitudes in question. The force of these objections rests on the logic2380 of identity as classically understood.
        6. Joanna Seibt herself thinks that Reduplication objections – in particular the “Branch Line cases” – “entail according to Parfit2381 a conceptual distinction between the notion of identity2382 and the notion of survival2383”.
        7. As noted elsewhere, I hope this is a misunderstanding of Parfit. What he ought to be saying – and probably is – is that we can have most of what we want2384 from survival without surviving2385. Because you - that very individual2386 – don’t survive unless you are the very same individual pre- and post- whatever contingency is under consideration.
        8. Reduplication objections also arise in the abortion2387 debate, and the argument over when “we” – assumed to be human animals2388 – begin2389. The reduplication objection implies that this cannot be before the possibility of twinning2390 is past.
        9. All these Reduplication objections are – I think – fully answered by adopting Perdurantism2391, though there might be other objections to the stances adopted.
    3. Fusion2392
      1. Like Fission2393, though to a lesser degree, Fusion is important in the philosophy of identity – especially of personal identity – in that it provides many Thought Experiments2394 (TEs), and some real-life examples, that test out the various theories.
      2. We need to consider the merger of the two psychologies2395: Parfit thinks we might like to inherit some of the better characteristics2396 of our partner, as in a marriage – but the creation of a single consciousness2397 from two seems difficult to conceive of (much more so than the creation of two consciousnesses from one, as in fission2398). Do we end up with a single first-person perspective2399, or with two? This needs to be related to multiple personality disorder2400.
      3. Also, consider Parfit2401’s seasonal people that alternately fission2402 and fuse. How conceivable are these TEs2403?
      4. We also need to consider physical as well as psychological fusions, as in the case of the dicephalus2404 and brain transplants2405. These are in any case easier to imagine – or to think we can imagine – and apply to real and hypothetical cases.
      5. A non-pathological case of fusion – also discussed under Pregnancy2406 and Chimera2407 – is that of the very early fusion of non-identical twin2408 embryos2409. Then, the adult may contain cells with different genotypes, which would normally have ended up as two individuals2410. Things get slightly odd when the twins2411 were of different sexes as the organs can develop from one or the other (or both). There’s also the normal case where ‘foreign’ cells (mostly red blood cells) wander across the placenta and end up in the body of either the mother or the fetus2412. All this is covered in "Ball (Philip) - How to Grow a Human: Reprogramming Cells and Redesigning Life", pp. 81-5.
      • Transplants2413
        1. From the standpoint of Personal Identity, the most significant transplants are Brain Transplants2414. While the transplantation of cerebrums2415 and larger brain2416-parts, including WBTs2417 will be covered elsewhere, here we should cover Thought Experiments2418 involving smaller brain-tissue transplants, which are supposed to transfer psychological2419 elements from one person2420 to another and not identity as such.
        2. In the context of animalism2421, however – where it is said (by Olson2422) that the brain2423 is just another organ – there is less reason for Brain Transplants to receive centre-stage. Some animalists2424 resist the “Transplant Intuition” – which is that “we go where our brains go”, but I will discuss that when discussing Brain Transplants.
        3. But, the animalist must still consider whether an organism2425 can survive2426 the transplant of “lesser” organs, and which – if any – transplants it cannot survive. We certainly accept that major-organ transplants – and even a complex of organs such as heart/lungs – preserve the Human Animal2427 (and person2428).
        4. Are there any limits beyond which we cannot go? Do we have to allow for a case of fusion2429 in extreme circumstances? Is there a “core” of the animal2430 that preserves identity while peripheral organs are swapped out?
        5. What about inorganic transplants? Is the Human Animal2431 preserved, and does it incorporate the transplanted organs, or are they useful appendages (like clothes) that are external to it? Alternatively, do we then have a cyborg2432? What about implants that affect our mentation2433?
        6. I can’t delve far into the ethics of transplantation, but only the metaphysics thereof. That said, I’ve read, enjoyed and briefly commented on "Ishiguro (Kazuo) - Never Let Me Go".
    4. Psychopathology2434
      1. Psychopathological cases are useful as real-life Thought Experiments2435 for teasing out issues in the topic of personal identity, as in psychology2436 generally, though it’s strictly-speaking of more interest to those espousing varieties of the Psychological View2437 than to animalists2438 like myself.
      2. The underlying assumption is that pathological cases have lessons for the general non-pathological case. It is only when a hidden process goes wrong that we get clues as to how it works.
      3. It is somewhat moot – though maybe not hugely relevant to my concerns – just what conditions count as pathological. Not everyone agrees that the latest edition of DSM2439 has it right, as many social and political factors enter into the choices.
      4. The topic of aphasia – loss of the ability to speak – is of particular interest given the inclusion of language2440 as a defining characteristic of persons2441 – on some accounts.
      5. The same might be said of deficits of memory2442 or of sense of self2443 (autism).
      • Clinical Observations2444
        1. Clinical observations may be a better guides than Thought Experiments2445 (TEs) as test cases for our theories of personal identity, because at least we know they represent a real possibility.
          • One of the main objections to TEs is that they are underspecified and confused.
          • However, even with actual clinical observation, we still have the trouble of the correct interpretation of the clinical data, which affects the conclusions we can draw from it.
          • See "Wegner (Daniel) - The Illusion of Conscious Will" for the sort of controversy that arises in these circumstances. Briefly, B. Libet’s experiments supposedly revealing that we act before the experience of willing the action can be variously interpreted.
        2. Examples of relevant clinical cases are
          1. Commissurotomy patients2446 and
          2. Those with Multiple Personality Disorder2447 (MPD).
          Is a commissurotomy or MPD patient “home to” one or two Persons2448?
        3. I will argue elsewhere that PATIENT – like PERSON2449 – is a Phase Sortal2450 of the Ultimate Sortal2451 HUMAN BEING2452.
          • One Human Being2453 can simultaneously be multiple patients (dental and chiropody, for instance), or a multiply-enrolled student.
          • Does this situation mirror those of our more seriously damaged human beings?
        4. One thing can’t be two things (in the sense of “be identical to”), even if the two things are of a different kind2454 to the one thing.
      • Commissurotomy2458
        1. A commissurotomy involves cutting the corpus callosum, the bundle of nerve fibres connecting the two cerebral hemispheres2459 of the brain2460. The procedure is used to treat epilepsy, but is invoked by philosophers as a Thought Experiment2461 (TE) to provide an alleged real-life example of Fission2462. The real-life situation usually has to be improved upon to overcome the laterality of the brain, and the two hemispheres are assumed to be idempotent, with nothing of philosophical significance alleged to ride on this idealisation.
        2. As with all TEs2463, what we can learn from this one depends on our level of description of what is supposed to be going on. The idea is that each hemisphere fully supports the mental life of the subject(s), and consequently that there are, or can come to be, multiple subjects (Selves2464) – and hence multiple persons2465 – within the same human animal2466.
        3. Commissurotomy is therefore used as an objection2467 to animalism2468. Some philosophers argue that (for modal2469 reasons) there are always two Persons2470 within the same Human Being2471.
        4. Clearly, this is not obviously the case in the normal asymmetric brain2472. See, no doubt, "Kinsbourne (Marcel) - Asymmetrical Function of the Brain", though this is rather an old book. So, in these Thought Experiments2473 – and prior to this idealised idempotency – there has to be a period of equalisation and duplication2474 of function. This sounds like it would lead to causal over-determination, but maybe the way it could be described is as with fault-tolerant computer2475 systems, so that one hemisphere always takes the lead (or maybe they alternate) – in fact, this is said to be the case with marine mammals, to enable them to sleep2476 without drowning: see, for instance, "Hecker (Bruce) - How do Whales and Dolphins Sleep Without Drowning?". The non-dominant hemisphere is just kept up to date – either continuously or periodically – with whatever data and current state is represented in the dominant hemisphere. In such a situation, there are already – prior to the commissurotomy – two exactly similar (other than that they are mirror images of one another) but non-identical half-brains2477.
        5. Of course, the last sentence above begs some questions. It is only the cerebral hemispheres2478 that are separated and duplicated2479 – but they are still physically connected via the brain-stem – even if the logical connections are greatly reduced. It is said – see "Rosen (Victoria) - One Brain. Two Minds? Many Questions" and the references therein, which summarises the controversy between Yair Pinto and Michael S. Gazzaniga – that severed hemispheres can still communicate with one another via cues passed externally to the brain2480. Indeed, the case of the dicephalus2481 suggests that this co-ordination is possible with two complete brains, where the hands can be coordinated to drive a car and even type, despite being controlled by different brains.
        6. A recent paper – "Pinto (Yair) - When you split the brain, do you split the person?" – has suggested that the research for which Sperry received a Nobel Prize has not been replicated2482 – in the case of two patients – and that this raises questions about the nature of consciousness2483. I have my doubts. Might the corpus collosum not have been entirely severed in these cases, or might one of the above situations apply? Rosen claims that Yair Pinto thinks that other fibers are involved.
      • Multiple Personality Disorder2484
        1. MPD – otherwise known as Dissociative Identity Disorder – is a condition traditionally viewed as psychopathological2485, to be treated by therapy, though there are dissenting views. It occurs where a Human Being2486 is, or appears to be, “home” to more than one Person2487, or at least more than one Personality2488.
        2. These Persons2489 / Personalities2490 may be radically dissimilar, and are (as the alternative designation implies) dissociated from one another. They can be like Locke2491’s night and day man “incommunicable consciousnesses2492”, unaware of one another’s existence – hence being in Lockean2493terms different Persons2494; or, they can be aware of one another, but as of distinct Persons2495.
        3. No doubt one could complain that the clinically2496-recorded cases are exaggerated, fabrications or otherwise unreliable. But there seems nothing wrong with them as TEs2497, and ones least open to cavil given their approximation to reality.
        4. Effectively, we are supposed to have a Brain2498 running more than one “Mind2499-program” (on the “mind-as-software” approach); or a brain segregated into more than virtual machine (on the “mind as hardware”) approach to the mind-brain relationship.
        5. MPDs pose no problems to those espousing the Psychological View2500 of Personal Identity – other than ethical issues concerning “therapeutic” suppression or unification of the alleged multiple Persons2501 (see "Shoemaker (David) - Moral Issues at the End of Life"), but what is the response of the Constitution View2502? Can we have more than one Person2503 – with more than one First Person Perspective2504 – constituted by the same human Body2505? Animalism2506 ignores psychological2507 factors altogether as far as identity is concerned, so won’t be troubled.
  3. Principal Examples - Artificial
    1. Brain State Transfer2508
      1. The idea behind a Brain State Transfer is that we can – at least in principle as a Thought Experiment2509 – copy the Information2510 from a Brain2511 to a backup device and then restore it to another (or the same) brain – as in "Williams (Bernard) - The Self and the Future" – without changing the identity of that brain.
      2. This seems fanciful to me, as I’m sure it does to most people not enticed by Transhumanism2512, but seems to be a natural Intuition2513 to them.
      3. My scepticism is partly because I am antipathetic to functionalism2514. The Information2515 stored in Brains2516 appears to be in highly distributed representations along connectionist lines rather than according to classical AI. The very physical structure and topology of the brain changes along with what it represents. There is no simple software / hardware distinction in a realistic Psychology2517 of Human Beings2518. Of course, even in a digital Computer2519 there are physical changes to the various gates and storage media. But there is no growing or disassembling of connections.
      4. Consequently, this is a case of an under-specified TE2520 that Kathleen Wilkes so objects to. When we try to flesh out the details, we find that the TE doesn’t really work. Any backup will need to be molecule by molecule to retain the informational richness of the original, and consequently any restore will not really simply modify the existing brain, but will destroy it and replace it with a replica2521 of the brain whose contents are supposedly being transferred. It will not simply feed information2522 into a pre-existing brain.
      5. Hence, I now think that Bernard Williams’s intuitions2523 about the post-transfer A-body-person remaining a “mixed up” A-person are incorrect. Nor does A-body-person end up as B, but as a fusion2524 of a replica2525 of B’s brain2526 and A’s body2527. The situation is best described as a transplant2528 of (maybe only part of) a replica of B’s brain into A-body-person’s head. A-body-person may end up confused, but only because – it seems to him – he’s obtained a new body.
      6. Of course, this TE2529 retains all the difficulties associated with Brain Transplants2530. A particular brain2531 is wired up to control a particular body2532, and won’t work adequately with a new one.
      7. Note that “uploading”2533 differs from – and builds on – BSTs because it requires the person2534’s psychology2535 and phenomenal consciousness2536 to be realised (I would say merely simulated) on a digital computer2537, making a two-phase project, whereas BSTs – superficially at least – just require the copying phase.
    2. Brain Transplants2538
      1. Brain Transplants, even if currently technically infeasible, are considered to be important Thought Experiments2539 in the philosophy of Personal Identity. They seem to give the same answer to both the holders of the Psychological Continuity2540 View and the Bodily Continuity2541 View of what ensures the persistence2542 of the person across time. Both say that the Person2543 goes where the Brain2544 goes.
      2. This assumption is the “Transplant Intuition”. However, some animalists2545 (say they) fail to share this intuition. They (Eric Olson for instance) consider the Brain2546 to be “just another organ”, albeit a very important one. I find this counter-intuitive2547.
      3. In evaluating these claims it is important to understand just how the Brain2548 works, so that we can determine just how fanciful our TEs2549 are. I will discuss this under the Note on the Brain2550. An assumption I make is that as we are interested in the question What We Are2551, it is important to be empirically accurate.
      4. Note that there are three conceptually distinct versions of the idea of a brain transplant2552.
        1. The first is a Whole Brain Transplant (WBT), though it becomes somewhat arbitrary quite where the brain2553 is supposed to terminate – ie. just how much of the Spinal Cord is included. I include “head transplants” in this category. Note that these might otherwise described as “Body2554 Transplants”. Both descriptions are tendentious and theory-laden.
        2. The second is the Cerebrum2555 Transplant (single or double).
        3. Finally, there’s a “Brain Tissue” transplant, presumably with the intention of transferring particular psychological2556 properties2557.
      5. It might be objected that the TEs2558 of WBTs are under-specified. A lot of motor-control is delegated to the non-brain parts of the Central Nervous System (CNS); apart from the brain, the CNS is, mostly, the spinal cord (see "Wikipedia - Central Nervous System"). To ensure motor-control, the brain and the CNS – and even the Peripheral Nervous System (PNS) need to work in tandem. The PNS consists in those elements of the nervous system other than the brain and the spinal cord (see "Wikipedia - Peripheral nervous system"). Yet a transfer of the entire CNS - which includes the spinal cord, let alone the PNS – which includes all the peripheral nerve endings (both sensory and motor) – stretches credulity somewhat.
      6. We need to consider just what the TEs2559 are supposed to prove, and just why we sometimes consider WBTs rather than just Cerebrum2560 transfers. I presume the preference for WBTs may stem from the presumed assurance that the seat of consciousness2561 is transferred, which might not be the case if only a cerebrum or two are transferred.
      7. It may be we don’t care too much whether the recipient of the transferred brain is fully functional – though if we want assurance that this individual is an animal2562, we might want the regulatory functions of the brain2563 to remain intact. But whatever brain parts perform these tasks, provided the resultant individual has a full brain, however cobbled together, we might have what we want if the wiring problem can be solved.
      8. A Whole Brain Transplant might better be described as a maximal body transplant, while it is much less clear what’s going on in a Cerebrum2564 Transplant. The latter are useful for cases of fission2565 (with the added assumption of the idempotency of the two hemispheres), but it’s not fully clear just what psychological2566 functions are left behind in this case. Because not all regulatory functions are in the cerebra2567, it’s more difficult to argue that the human animal2568 is transplanted with one or more cerebra2569 than it is with a WBT.
      9. I’ve not heard of anyone arguing for animal fission2570 by a fission of the whole brain2571, but maybe they have. I suppose the simplest case of Animal Fission would be the separation of Dicephalus2572 twins, taken (rather implausibly) to be a single Animal2573 with two heads. But this case might better be described as two animals sharing parts, which are then apportioned in the process of achieving separation.
    3. Siliconisation2574
      1. “Siliconisation” is a name – there may be others – for Thought Experiments2575 involving the gradual replacement of neural tissue by silicon computer2576 chips.
      2. An example is Peter Unger’s “zippering”. Unfortunately, I can’t find the reference for this, so it is possible I’ve either misremembered the term, or forgotten the author. Unger does discuss the gradual replacement of neurons by silicon in pp. 122-123 of "Unger (Peter) - The Physical Approach To Our Survival", but I couldn’t see the term used there.
      3. Anyway, this is a subtle argument. We don’t – of course – know whether this TE2577 is metaphysically2578 possible2579. We don’t know whether silicon can sustain consciousness2580, though functionalists2581 assume that it can. Gradually, it is said, we no longer have a human animal2582, but one that will – behaviourally at least – will be indistinguishable from one.
      4. I think the situation is best viewed as an increasingly mutilated human animal2583 with an ever-growing prosthesis. The term for such is a “Cyborg2584”.
      5. I doubt that the silicon would maintain phenomenal consciousness2585, but just be a “zombie2586” simulacrum.
      6. Any replacement that would maintain phenomenal consciousness2587 would be indistinguishable from natural part-replacement. But I think this is a contingent, empirical matter, a long way off from an answer.
      7. A question I’ve considered is whether siliconization would preserve the First Person Perspective2588, irrespective of whether it impacts on consciousness2589.
      8. I just note here that “silicon” is used as a proxy for any non-carbon-based intelligence2590. Germanium, or Qubits might do as well (or better), though quantum2591-computing2592 might change the game somewhat.
    4. Dracula2593
      1. Count Dracula is only a Fiction2594, but the vicissitudes he is supposed to be able to survive may be worth some brief considerations to determine whether they are metaphysically possible – or even make logical sense.
      2. I have no great interest in what supposedly causes vampirism – whether it’s a virus or whatever, nor on how it’s passed on. Nor do I care about Dracula’s abilities to climb walls or fly through the air. Nor about his supposed aversion to garlic or crucifixes.
      3. However, the vampire is supposed to only maintain his Existence2595 by drinking blood – preferably human, but animal blood – particularly of rats – will do at a pinch. I presume there’s some refection of ancient ideas that ‘the Life2596 – or Soul2597 – is in the blood’, which was not to be eaten.
      4. Dracula is described as ‘undead’. That is – he has died at some point – in fact at many points in later retellings in order to keep the sequels running – but is neither claimed to be alive nor dead. We might reflect on how such an idea squares with our normal ideas of what Life2598 and Death2599 are.
      5. The fictional claims that really interest me relate to Dracula’s Metamorphoses2600. The first question is what he ‘really’ looks like. In the book, and film thereof, Dracula in has castle looks as you might expect someone over 400 years old to look. But when he appears in public, he looks young and handsome. Then – in the dénouement – when he is mortally wounded in the guise of his ancient self – he reverts to his youthful self in response to Mina’s kiss, after which he is ‘released’ by beheading. A question is – is he metamorphosing, or supposed to be influencing the vision of his beholders? As the latter would be needlessly complicated in busy London streets, I assume the former, especially as he is supposed to transform himself otherwise. Enough to say there’s nothing metaphysically problematical about such identity-preserving Metamorphosis2601, as it’s presumably ‘just’ a rearrangement of Matter2602, with some need for an energy source to effect the same. One needn’t worry about the details.
      6. The more interesting metamorphoses involve Dracula’s supposed Metamorphosis2603 into a large dog-like animal on leaving the ship at Whitby, and into a mist, into bats, and rats.
      7. Transformation into a dog (and back) would be a trans-species Metamorphosis2604. I’ve not much special to add here. If Dracula still falls under the Natural Kind2605 concept Human Being2606, and the natural kind is an essential property of the Individual2607, then he would cease to exist as the dog, but – if Intermittent Existence2608 is allowed – might subsequently ‘exist again’. The same might apply to the other transformations.
      8. It is supposed that Dracula transforms himself into many bats (or rats). Bats and rats are much of a muchness. The interesting common feature is the one-to-many ratio. If Dracula cannot survive – logically speaking – Metamorphosis2609 into a dog, he certainly can’t survive transformation into a single rat or bat, let alone many of them. Each rat – we may suppose – is an independent sentient being. Can they collectively constitute another being? Would this ‘distributed’ being be an Individual2610? Are we to suppose Dracula to be conscious in this state? It is true that Organisms2611 are constituted by a multitude of cells, but these cells aren’t independent beings. More could be said – maybe along the lines of Societies2612.
      9. Transformation into a mist is very odd. Presumably this is disassembly into microscopic constituent parts. Can an Organism2613 – as distinct from a bicycle – survive such an adventure? "Olson (Eric) - Life After Death and the Devastation of the Grave" thinks not. Would he cease to exist in the interim or exist as a Scattered Object2614?
      10. It’s not in the book, but – at least in Hammer Horror – human blood dropped onto his ashes allows Dracula to regenerate. This would seem to be an example of Resurrection2615. At least there’s some physical Continuity2616 mediated by the ashes.
    5. Teletransportation2617
      Original Case Study - “Beam me up Scottie”
      1. There are two obvious supposed mechanisms for teletransportation:
        1. Transferring both matter and information; or simply
        2. Transferring information, utilising local matter.
      2. I gather that in the Star Trek series itself, it's plasma that's transmitted, but as this is unlikely to get to its destination without causing havoc, the information-only transfer is more reasonable. However, even in the plasma-transfer case, I'm unconvinced that I'd survive2618, for two reasons:
        1. Some things (eg. bicycles, and analogous artifacts2619) can survive disassembly and re-assembly, but only if they are disassembled into recognisable parts. If a bicycle is disassembled into iron filings and latex goo, and then re-manufactured, we might be reluctant to say it's the same bicycle.
        2. As a matter of empirical fact, fundamental particles are not distinguishable, so the labelling cannot be undertaken even in principle. If it doesn't matter which particle fits where, provided they are of the right sort, the case seems to collapse into the information-transfer variant. On consideration, I’m not 100% confident on this point. In any case, since we are biological organisms2620, the particular atoms that make us up aren’t important, provided they are replaced gradually, and the structure is maintained.
      3. We now turn to the information-transfer case. My main worries initially here have to do with the possibility of duplicates2621. We all know that a counterfeit, however well done, isn't the same as the original. The logic of identity2622 is constraining. A thing is identical to itself and to nothing else, so if a thing is identical to two "other" things, these "two" must be identical to one another. Given that my two beamed-up versions aren't identical to one another, at least one of them can't be identical to me. And, since they are exactly similar2623, why choose one rather than the other? So, neither is me. Both are exactly similar2624 to me, but identity is to be distinguished from exact similarity. This situation is comparable to the case where the "original" human being isn't destroyed. This sort of thought experiment2625 is referred to as the “Branch-line Case”: see section 75 in "Parfit (Derek) - What We Believe Ourselves To Be", in "Parfit (Derek) - Reasons and Persons". Canonically, it's where I've only a few days left to live (because the scanner has done me a mischief). Would I be happy in the knowledge that my duplicate2626 would go on and on, and take up with my partner and career where I left off? Is this as good as if I survived? Not likely, unless we’re Parfitian2627 saints! Note, however, that the case is tendentiously described (ie. as teletransportation) to lead to this seemingly obvious conclusion that this is a form of transport. Note that the technology is described tendentiously with the opposite intuition as “Telecloning” in "Dennett (Daniel) - The Mind's I - Fantasies and Reflections on Self and Soul: Introduction". The "main line" candidate would be perfectly happy that his rival back home was about to perish.
      4. Philosophers split into two main camps in response to these situations (though - jumping ahead a little - even if perdurantism2628 is true, we still might not have the teletransportation of a persisting2629 individual2630, because of the wrong sort of causal2631 link leading to a lack of forward continuity2632 of consciousness2633, or even of physical continuity). So there are multiple bifurcations, but we keep things simple here and just follow those who think that I either survive2634 or have what matters2635 in survival:-
        1. 4-dimensionalists (Perdurantists2636): A thing is really a 4-dimensional worm through space-time, which consists in a set of instantaneous 3-D stages. In this situation, where multiple teletransportations occur, all copies are me. They are different 4-D worms, but they share all their pre-beaming-up stages. There were always at least 2 people present.
        2. 3-dimensionalists (Endurantists2637) claim that while I'm not identical to the beamed-up person, yet I have what matters2638 in survival2639.
      5. Note that there's a modal2640 argument to the effect that even in the usual case where only one copy is beamed up, and the original is destroyed, because there might have been multiple copies, this means that identity isn't preserved even in the case where there's only one teletransportation-result created. This seems to lead to paradox. Imagine the situation - I'm beamed up and think I've survived2641, and am then told that the machine has malfunctioned and produced a duplicate2642, and hence, contrary to my experience, I haven't survived after all! Unfortunately, some philosophers go along with a "closest continuer2643" theory of identity across nasty cases of fission2644 or fusion2645. I'm identical to (or even “survive as2646”) the continuer that most closely continues me, either psychologically2647 or physically2648, according to taste. How can my survival depend on what happens to someone else, the thought goes? See the “Only 'X' and 'Y' Principle2649”. While this does seem odd, in fact you can’t trust the feelings of the teletransportees – for even if multiple copies are made, they all subjectively feel like the original.
      6. There are two questions outstanding.
        1. Do I survive the transfer? And, if I don’t,
        2. Does it matter that I'm not identical to the post-beamed person?
        I’m here ignoring the (as it seems to me) illogical “survival2650 without identity” option.
      7. We have seen that it is possible that it appears to me that I survive, yet I do not. On the endurantist2651 view, the logic of identity2652 means that I cannot trust my experience. So, it seems possible that the person “waking up” is not me. I never wake up – in the sense that I lose consciousness, but never experience a re-awakening - but someone else with my past in his memories is created in my stead.
      8. So, is survival2653 itself what matters2654? Well, on the perdurantist2655 view, survival is not even sufficient for me to have what matters in the sense Parfit2656 intends. Imagine the case where the machine goes haywire and 1,000 exactly similar teletransportees are created. All these share my pre-teletransportation stages, so are all me (except that “I” was always 1,000 co-located individuals – and maybe more – who knows how often the machine may go wrong in the future!). In this case 1,000 individuals would be squabbling over the same friends, relations, job etc, and that might be rather a nuisance, and it seems that I wouldn’t really have what most matters to me, though no doubt I would be able to rebuild my life from scratch. However, this isn't fundamental to whether I do or don't survive, and it seem that what really matters to me is survival itself. If I'm a violin virtuoso or a body-builder, I might not find it much fun surviving as a brain in a vat2657, but that would just be tough. The standard philosophical test is the "future great pain test2658". I believe that the future continuant will be me, whether I like it or not, if I'm as terrified of that continuant being tortured as I would be if I were to be tortured in the normal course of events. Our BIVs2659 would be even more upset at the prospect of torture-simulation being fed into their brains than at the loss of their beautiful bodies. Our fears have to be moderated by logic, however. But this is no worse than ignoring a revivalist rant on Hellfire. If I’m not identical to a particular teletransportatee, I won’t survive2660, and if I don’t survive2661 I won’t feel anything. I may have a moral obligation not to land others in a pickle, but it won’t be the selfish problem of avoiding landing myself in one.
      9. I can imagine fissioning2662, by the bungled-beaming-up process, into 1,000 continuants, none of which (on a 3-D view) is identical to me, but all of whom seem to themselves to continue my first-person perspective2663. I can imagine (just about) going into the machine, and coming out again 1,000 times (when the life-histories of the 1,000 then start to diverge). While the psychologies of the 1,000 are initially identical, they are not connected to one another, though they are each connected continuously to the pre-beamed-up person. So, if even one of them were to be threatened with torture, I'd be terrified if I thought that that one (even amongst all the others) would be me, in the sense that my experience continues into that body.
      10. But, do I survive2664? I don't think I do, for reasons given above. It’s not that I reject perdurantism2665, it’s just that even accepting perdurantism there’s too radical a discontinuity. It's clear that a duplicate2666, looking backwards, wouldn't be able to tell apart the situation from the normal one of (say) just having woken up after a dreamless sleep. However, I imagine it's possible (even in a supposedly successful teletransportation) for – moving forward2667 – there to be nothing it's like for me after the beaming - it's as though I never woke up, though someone else woke up thinking he was me. This would be a tragedy but, we'd never know about it, because (on this hypothesis) I wouldn't be around to tell the tale, and my duplicate2668 would claim everything was fine (he remembered going to bed and waking up, as it were).
      11. This worries me slightly about our every-night bouts of unconsciousness. How do I know that “the me” that wakes up is “the same me” that went to sleep, and would it matter if it wasn't? Was my mother right in saying “it’ll be all right in the morning”, in the sense that I’d have no further experience of the current problem, or indeed of anything at all? Is this worry parallel to beam-me-up case? Or is sleep a pain-free death?
      12. I suspect the answer to these questions is that for a physical thing to persist, there needs to be appropriate physical continuity, and this continuity guarantees its persistence (though this intuition is a bit of a feeble response). On the assumption that my brain2669 supports my conscious experience, this is enough to reassure me that, as it's the same continuing brain in my skull overnight, it's the same me that's conscious in the morning. I don't have the same reassurance in the case of beaming-up. So, I wouldn't go in for it, even if it came to be seen as a cheap form of transportation.
      John Weldon's "To Be"
      1. This is a 10-minute animated cartoon that discusses the question of teletransportation. Last I looked, it was available on Vimeo at John Weldon’s "To Be". It was originally (as far as I remember) on YouTube, but was taken down with the legend “This video is no longer available due to a copyright claim by National Film Board of Canada”. No doubt the Vimeo copy will disappear in due course.
      2. In it, a mad scientist invents a teletransportation device as a means of free travel. The necessity of destroying the original is discussed, initially to avoid overpopulation, and then to prevent disputes as to who is who. The branch-line case, where the original is destroyed five minutes after the replication2670, also features. There, it is clear that the original is a different individual to the teletransportee, and clings to life. Destroying the original is (in retrospect) murder – but what’s the difference between this situation and the one where the original is immediately destroyed? There’s obviously the anticipatory angle – in the “normal” case, the original thinks of the situation as one of travel, and no-one thinks that identity is not preserved in the process, whereas in the branch-line case the confusion is exposed, and the original knows that the teletransportee is a clone2671. So, maybe the branch-line case is clearly a case of murder, whereas the “normal” case is a case of accidental homicide where the perpetrator is unaware that he’s killed someone?
      3. The twist in the tail is that the heroine, overcome with guilt after the branch-line case (which she’d originally just thought of as a logical demonstration) – and now understanding the metaphysics of teletransportation – thinks she can now
        1. atone for her crime,
        2. escape the guilt and
        3. escape her creditors by being herself teletransported.
        For (i) she dies and is cloned2672 and (ii) / (iii) the teletransportee is a different individual to the original, so why should this individual have any moral connection to the other? There seems to be something fishy about this, but maybe it’s perfectly sound reasoning. However, …
      4. In the animation, the original and the teletransportee get muddled up (after all, both look alike and think alike), so for practical purposes we are in a situation similar to Locke’s “amnesiac drunkard” case – society2673 has to find the drunkard guilty for his forgotten crimes (in that case because of the possibility of dissimulation); so, maybe the possibility of dissimulation or devious intent (as in the animated case) would for practical purposes mean that the teletransportee would inherit the moral and legal baggage of the original – and surely they would, or the practical consequences of people routinely escaping their debts would be grave.
      5. Yet, metaphysically, it’s no different from escaping your debts by committing suicide, because the teletransportee is not the same individual. And, I think the Branch-line case shows that it’s not the same person either, unless we allow the non-substance term “Person” to have multiple instances – as immediately post teletransportation, both the original and the teletransportee would seem to be the same person (however this is defined non-substantially) even though they would rapidly diverge into two different persons. Just as in the case of suicide, society2674 has in the past tried to show that you “can’t really escape” – because of the prospect of Hell, so in the teletransportation case the same myth would be propagated. The teletransportee would be deemed to inherit the moral baggage of the original and, if not up to speed on the metaphysics, would think rightly so. But the original would have escaped for all that!
      • Replication2675
        1. Replication arises where an obvious copying process takes place. I would claim that Teletransportation2676 falls under this head. I'm currently not clear whether there's a distinction between replication and duplication2677, other than that duplication would seem to be restricted to doubling, whereas replication is more open-ended.
        2. Does amoebic division count as replication? When an amoeba divides, this is not a case of fission2678 but of reproduction. So, there are three amoebae involved – the original one and the two daughters. This is not the same situation as in fission.
        3. The above said, does this case depend:
          1. on how the case is described2679 and
          2. on how – empirically – the replication occurs?
        4. If the amoebic division occurs by budding of a daughter, so that we can continually "track" the parent, then we have straightforward reproduction. If the division is symmetrical, the case could be correctly described as replication, though maybe on a perdurantist2680 view we originally had two coincident2681 amoebae that both persist.
        5. We need to watch out for closest continuer2682 descriptions of the case.
        6. I feel I need to investigate the science of all this a bit more.
          1. On amoebae: see "Wikipedia - Amoeba (genus)"
          2. Their standard division is as all eucaryotic cells – by Mitosis ("Wikipedia - Mitosis") and Cytokinesis ("Wikipedia - Cytokinesis")
  4. Transhumanism2683
    1. Transhumanism is the thesis that we human beings2684 can – in principle at least – transcend our animal2685 nature and escape or at least augment – in whole or part – our animal bodies2686.
    2. The movement hopes – amongst other things – to extend our lifespans – either considerably or indefinitely.
    3. One particular strand of this hope is to escape our mortal bodies altogether by “uploading2687 ourselves” to a digital computer2688.
    4. Of course, there’s lots more to the movement, especially with somatic and mental augmentation to expedite our evolutionary2689 progress via Cyborgisation2690.
    5. I’m very doubtful about the possibility – practical or theoretical – of most of these aims, as well as their desirability. However, while this topic is on the borders of sci-fi, it is a challenge to animalism2691 in that it presupposes that “we2692” can transcend our biological origins2693 in some way or other.
    6. The premier transhumanist of my acquaintance is Nick Bostrom. He has also argued that we might be (and indeed probably are) living in a computer2694 simulation. See:-
      1. "Bostrom (Nick) - Are You Living in a Computer Simulation?",
      2. "Weatherson (Brian) - Are You a Sim?", and
      3. "Bostrom (Nick) - The Simulation Argument: Reply to Weatherson".
    7. A light-hearted introductions to the ideas and personalities are:-
      1. "O'Connell (Mark) - To be a Machine", and
      2. "Tegmark (Max) - Life 3.0: Being Human in the Age of Artificial Intelligence"
    8. And the main text for this topic is "More (Max) & Vita-More (Natasha) - The Transhumanist Reader". It’s probably best to start with the Introductions to the book’s nine Parts.
    9. Enough to say here that I’m not sympathetic to these aims, nor to the possibility of Uploading2695, even in principle.
    1. Nearby Hopes
      • Chimeras2696
        1. Chimeras are animals2697 – or maybe humanoids – the mythical centaur is an example – made up of parts of animals from different species.
        2. The original Chimeras were mythical beasts ("Wikipedia - Chimera (Mythology)"), improbable amalgams of lion, goat and snake, though mules ("Wikipedia - Mule", the progeny of a male donkey and a female horse) are chimeras as the parents are of different species with different numbers of chromosomes.
        3. My only reference for this topic was originally "Savulescu (Julian) - Should a human-pig chimera be treated as a person?". This brief paper focuses on the ethics of using (future) pig-human chimeras as sources of (human) transplant2698-organs or neural2699 matter.
        4. The paper’s rhetorical question is rather ludicrous as there would never be any intention of engineering pigs with the attributes needed to qualify as a person, nor the need to do so even in the case of neural tissue (which would remain in the petri-dish). However:-
          1. Admittedly, "Ishiguro (Kazuo) - Never Let Me Go" considers the cloning of human beings so their organs can be harvested, but this is presumably because it is deemed to be the technologically simplest solution.
          2. I’m admittedly unclear about the question of neural tissue. But the idea of developing neural structures within a pig-human chimera and transplanting these structures into a human head is as far-fetched as brain transplants2700, so can be ignored for now.
        5. Whether such a beast – whether hybridised with a human or not – were to qualify as a person2701 ought to be based on its cognitive capacities and not merely on its chromosomes.
        6. It is possible that this topic might relate to transhumanism2702. Rather than adding small quantities of human to pig, we might add quantities of animal to human. This would be the case in organ transplants – where an essentially normal organ is transplanted – but it might be the case that augmentative strategies could be adopted whereby humans are enhanced with bodily features (or, say, the physiological infrastructure) of animals, much as in the case of cyborgs2703, but with organic rather than inorganic parts.
        7. I’ve noted the extended usage of the term “chimera” to designate human beings with body parts or cells originating from different human beings. I’m not sure this is helpful, or that it has much significant to say about identity conditions. Genetic uniformity is not sufficient for numerical identity (because of identical twins2704) and I doubt it is necessary either. Examples given are women after (or possibly during) pregnancy and human-human transplant recipients.
        8. The following useful material comes from notes made on the RIP-version of "Kingma (Elselijn) - Were You Part of Your Mother?".
          1. Micro-chimerism (See "Wikipedia - Microchimerism"): Fetal-maternal & Twin-twin transfer. Pregnant women usually pick up fetal cells during pregnancy, which remain in their bodies for decades.
          2. Macro-chimerism: Kidney donation; blastocyst fusion (see "Wikipedia - Chimera (Genetics)"). This link distinguishes Chimeras from Hybrids and Hybridomas. In a Chimera, each cell is genetically uniform, whereas:-
            • Hybrids: form from the fusion of gametes from two species that form a single zygote with a combined genetic makeup. See "Wikipedia - Hybrid (Biology)".
            • Hybridomas: result from the fusion of two species' cells into a single cell and artificial propagation of this cell in the laboratory. See "Wikipedia - Hybridoma Technology".
            In the latter case, two blastocysts (of non-identical twins) fuse non-pathologically (the pathological cases are of conjoined twins – where there’s incomplete fusion and integration) – for all Kingma knows this might be true of her – so that some organs are formed from one blastocyst and the others, or the skin, are formed from the other. It’d be bonkers to think that such cases weren’t each a (single) organism.
        9. I’m indebted to "Ball (Philip) - How to Grow a Human: Reprogramming Cells and Redesigning Life", pp. 81-5, for further information on the above case where, because of very early fusion of non-identical twin embryos2705, the adult may contain cells with different genotypes, which would normally have ended up as two individuals. Things get slightly odd when the twins were of different sexes as the organs can develop from one or the other (or both). There’s also the normal case where ‘foreign’ cells (mostly red blood cells) wander across the placenta and end up in the body of either the mother or the fetus.
      • Cyborgs2706
        1. Briefly, a Cyborg (Cybernetic Organism) is a human being (or any organic being) with some inorganic parts (see "Wikipedia - Cyborg").
        2. Compare and contrast with Android2707, which is a humanoid robot.
        3. See also Siliconisation2708, the Thought Experiment2709 wherein we have the gradual replacement of (human) neural tissue with microchips while – allegedly – preserving consciousness2710 and mental2711 function.
        4. And again, connect to Chimeras2712. In this case, biological material from other animals is merged with human tissue to provide an enhancement, and there are other situations where human tissue is to be harvested from other animals – after genetic modification or other means – for the purpose of implantation2713.
        5. All of the above is beloved of the Transhumanists2714, who want to enhance the human condition by all means possible, even if this means that humans are no longer – strictly speaking – human beings2715.
        6. My interest in Cyborgs stems from the impact of their possibility on the truth of Animalism2716.
        7. If we are (human) animals2717, would we continue to exist if increasingly enhanced by technological implants2718 and extensions. I see no immediate problem – just a bit more along the lines of spectacles & hip replacements. But no doubt there would eventually become a tipping point when we become more inorganic than organic2719. Our persistence conditions2720 would then be mixed between those of organisms2721 and artefacts2722. Or is the situation better described by us shrinking (if our parts are replaced) or – if the technological parts are add-ons – remaining unchanged. Currently we’re unchanged by our spectacles, but hip replacements become part of us. Is this not so?
    2. Far Off Hopes
      • Uploading2723
        1. This Note will discuss the Transhumanist2724 fantasy of uploading you2725 (or your mind2726) to a computer2727.
        2. For this to be possible, the “Computer Model” of the mind – which seems to be the dominant paradigm in neuroscience – needs to be true of us, and not just a model. This is the view that the brain operates like a digital computer2728 and is disputed by, for example, "Epstein (Robert) - The empty brain".
        3. "Miller (Kenneth D.) - Will You Ever Be Able to Upload Your Brain?" points out the formidable technical obstacles to building a full model of the brain, and that consequently Uploading is not to be anticipated any century soon. The author does, however, think that it is metaphysically possible2729.
        4. I don’t believe this, for the same reason that I don’t think Teletransportation2730 – even if technically feasible – is identity-preserving. Rather than uploading you, we’d only achieve a simulation. But even if the individual ‘in’ the computer were to be conscious2731 and a person2732, it would not be you but someone else.
        5. Additionally, this Note should cover the – more realistic but still technologically very remote – possibility of uploading information2733 into our brains2734, though this overlaps with Brain State Transfer2735, though the latter is the uploading of an entire psychology rather than information (and to a brain, rather than a computer2736).
      • Computers2737
        1. This discussion will be restricted to the role Computers play in the philosophy of Mind and Personal Identity. While I am an animalist2738, the mind2739 and brain2740 are important topics in alternative accounts – in particular the Psychological View2741 and the Constitution View2742.
        2. The “Computer Model” of the mind seems to be the dominant paradigm in neuroscience. This is the view that the brain operates like a digital computer. This is disputed by, for example "Epstein (Robert) - The empty brain".
        3. There’s a cross-over in much of the above topic with Functionalism2743.
        4. Where this gets exciting is in the Transhumanist2744 hope of uploading2745 (you2746, or your mind2747) to a computer. This will be dealt with under the head of Uploading2748.
        5. A related issue – also currently noted under Transhumanism – is whether we are (most probably) living in a computer simulations, whether or not we might have been uploaded2749 there.
        6. Also, there’s the whole question of Artificial Intelligence2750, and in particular whether computers – or maybe even computer programs – might ever become persons2751.
        7. This topic might get caught up in the “Connectionism” debate, and whether connectionism – which seeks to adopt the neural connectionist architecture of the brain – can account for the “systematicity of cognition”. I don’t want to stray too far down this interesting path.
        8. I might also add the question whether the success of self-teaching game machines (AlphaGo and AlphaZero – I have "Sadler (Matthew) & Regan (Natasha) - Game Changer: AlphaZero's Groundbreaking Chess Strategies and the Promise of AI", but it is mostly about chess!) have anything to say about the innateness controversy – whether human beings are born with a “language2752 instinct” or whether generic associative learning capabilities are sufficient to explain the near-miraculous acquisition of language by toddlers. I used to think not – see the Poverty of the Stimulus Argument2753.
      • Androids2754
        1. Briefly, an Android (Wikipedia: Android) is – or would be were one to be built – a robot with no organic parts that looks and acts like a human being; those looking otherwise are simply “droids”.
          • The Android needs to behave as if it had an appropriate psychology2755 – at least one that passes the Turing Test.
          • This psychology need not involve phenomenal consciousness2756 – indeed it is one of the problems of philosophy to consider how we could ever know whether or not an android is phenomenally conscious.
          • Could it not be a zombie2757?
          • Compare and contrast with Cyborgs2758.
        2. The relevance of Androids to the topic of Personal Identity stems from whether or not Androids would be persons2759.

Concluding Remarks
  1. Having now discussed Thought Experiments in general, we now in our next Chapter2768 turn to the question of Resurrection – the matter that first motivated Locke (and – I suspect – Lynne Rudder Baker and many others) in their discussions of Personal Identity.
Chapter 11: Resurrection2769

Abstract
Chapter Introduction2770
  1. While I wish in this chapter seriously to consider the religious hope of Resurrection, I do not want to get side-tracked onto matters of Scriptural exegesis, or into evidential matters of whether particular resurrections – specifically of Jesus – happened or not. In this regard, I’m interested only in what believers in resurrection take it to be, and whether they provide any detailed metaphysical account of how it is supposed to work.
  2. As in the chapter on Thought Experiments, this chapter is partly aimed at checking how (my version of) Animalism copes with the projected situations. As such, I may extend this to other posited versions of post-mortem survival, though most are ruled out by the essentially physical nature of the human person as proposed by Animalism.
  3. While not wanting to get too far off topic, especially at the end of the thesis, I want to consider some of the ethical consequences of adopting Animalism with – as I have argued – the lack of hope of post-mortem existence. The topic of “Death and Ethics” is already a bit tangential to my thesis, but there’s a set of questions in which I have an interest and on which I wonder whether my views on Personal Identity have anything to say. These two are the most important:-
    • Why is death bad (for the deceased)?, and
    • Can the dead be harmed (assuming they no longer exist)?
  4. So, we start off with a discussion of Death2771, which – like Life (discussed in Chapter 6 – I take to be a biological event (or rather a Process). We touched on Brain Death in Chapter 2. Despite its pragmatic utility (which I suspect is the main motivator for accepting it as a criterion of Death) this idea is rather confused on any Biological View of What We Are.
  5. I will also discuss certain occasional events on the periphery of Death, namely Near Death Experiences2772 and Out of Body Experiences2773. Do these events have anything to say about “where we’re going”, in the first case, or what we are, in the second?
  6. Getting closer to Death, I need to discuss Persistent Vegetative States2774. From an Animalist perspective, such persons are not dead – any more than the Brain-dead are Dead – but whether they should be kept alive is (I would claim) primarily a pragmatic issue to do with the use of resources, coupled with consideration of what life is like – if there is anything – for those in such a state.
  7. Then we get to the meat of the Chapter – discussion of Life after Death2775. What is it supposed to involve, where is it enjoyed, and how do we get there? Clearly, there are many options. The question is are any of them possible – and, better – actual?
  8. The two options I consider are Resurrection2776 and Reincarnation2777. In both cases, the big question is what makes it the case that the individual Resurrected or Reincarnated the same individual as the one who died. I suspect ‘nothing’ in the absence of a Soul, though much argumentation is required to reach this conclusion in the face of objections and various suggestions for possible mechanisms.
  9. We discussed Uploading to a Computer as a (bare) possibility for Life after Death in the Previous Chapter.
  10. In this regard, we need to discuss the possible interim states between Death and putative post-mortem survival. I need to discuss Corpses2778, which – in some of the easiest cases – are (supposed to be) the mediators of continuity of identity between Death and Resurrection. Corpses also cause philosophical worries – on many physicalist accounts of Personal Identity – about where they “come from” and whether “we” end up as Corpses.
  11. We need to discuss the possibility of Disembodied Existence2779 (which I imagine is the Interregnum2780 for Reincarnation) together with a reconsideration of Intermittent Objects discussed in Chapter 5.
  12. Finally, we need to reflect on the consequences of Life after Death, which is usually taken to be Immortality2781 (though supporters of the ‘conditional immortality’ position in Christianity have Resurrection followed by destruction for those found unworthy of eternal life.
  13. Before doing so, I will reflect on the supposed difficulty – displayed by Tolstoy’s Ivan Ilych2782 of accepting the inevitability of our own deaths.
  14. But, is Immortality really something to be desired? Reflection on the Makropulos Case2783 suggests that an infinite life would be unbearably tedious, even though at each possible terminus we might want to live on.

Main Text
  1. Death2784
    1. Death is important to our study because we’re considering our persistence conditions2785, whether we consider ourselves to be
      1. Human Persons2786.
      2. Human Animals2787 (members of the species homo sapiens2788), or
      3. Human Beings2789
      and death would seem to be the terminus of such existence2790.
    2. That this is so has often been resisted, which is why we must consider such matters as:-
      1. Resurrection2791,
      2. Reincarnation2792, and
      3. Disembodied Existence2793.
    3. Death should be considered a biological event, or maybe – better – a process2794. It is the termination of life2795, which is also a biological process, though usually a longer one.
    4. Other forms of – and terminations of – existence2796 may be termed “life” or “death”, but these are metaphorical expressions used by analogy with biological life or death. So, is the resurrection2797 life – if there is one – really “life” or a continued and enhanced form of existence2798? Also, is the “second death” really “death”? I suppose we would allow alternative metabolisms to count as “life2799”, so that an Android2800 that maintained itself might be said to be “alive”; and, consequently, the destruction of such a being might be classified as “death”.
    5. A particular case of the above is Brain Death2801. It’s a large question for Animalists2802 – and for holders of the Psychological View2803 – whether Brain2804 Death is really death, or whether it is (for holders of the PV2805) the death (or end) of the Person2806.
    6. As a spin-off from the (alleged) Corpse Problem2807 for animalism2808, we need to discuss the process2809 of dying – the transition from life2810 to death. Just when does death occur (for human animals2811)? No doubt there is a degree of vagueness2812 here (though ascribing ‘vagueness’ to such a ‘terminal’ event as death seems counter-intuitive).
      → See "Shoemaker (David) - Personal Identity, Rational Anticipation, and Self-Concern", p. 81 for this objection to animalism2813.
    7. Consideration of whether we should fear death, or the process2814 of dying, is probably beyond the bounds of this Thesis. However, for a comforting account of the normal process of dying in old age, see this “short” from the BBC: BBC: Dying is not as bad as you think. The author – a medical doctor (Kathryn Mannix – see With the End In Mind) – talks about the “good death” and the process of dying in your bed being not so scary. The dying drift in and out of consciousness2815, and return from unconsciousness feeling much as after a refreshing sleep, so we know the coma doesn’t feel frightening and isn’t noticed when it happens. The “death rattle” shows just how relaxed you were. Normal dying is a really gentle process.
    8. Would that were the way for all, rather than as the result of a rather painful trauma2816 when you’re not ready to go.
    1. Near Death Experiences2817
      1. NDEs, if they are experiences of anything veridical:-
        1. Offer a serious challenge to those who deny the possibility or actuality of life after death2818,
        2. Appear to offer support for non-physicalist accounts of the mind and
        3. Cause problems for animalists2819 by lending support to alternative accounts of what we are2820 – maybe souls2821.
      2. Most of the phenomena – which I need to document and comment on (see "Wikipedia - Near-death experience") – can probably be explained by the usual “dying brain” / anoxia / endorphins suggestions, though this can be rather facile – partly because not all NDEs are had by those near death2822, but also because the dying brain2823 might not be up to the job of having (and remembering2824) scenes of such alleged clarity. However, see "Jarrett (Christian) - Ketamine trips are uncannily like near-death experiences", which reports on a study that makes a detailed connection between the experiences of Ketamine (and LSD) users and NDE-reports.
      3. I have my doubts about when such experiences actually occur – but the suggestion that they occur when the experiencer is “coming round” doesn’t seem to be popular.
      4. A difficult situation to “explain away” is where the NDE-experiencer claims to see something (while having an Out of Body Experience2825) they could not have seen under normal circumstances.
      5. Further “awkward” cases to dispose of are where experiences analogous to the NDE are had by / shared with friends / relatives of the dying. I presume these accounts should be rejected out of hand, along with all other incredible reports of exotic parapsychological phenomena. The Fenwicks give a sympathetic hearing to (the then) recent results of parapsychological research – but in an undocumented way, and showing unawareness that the claims are of slight (though allegedly statistically significant) deviations from chance, not of the exotic phenomena exhibited in the accounts of NDEs. See "Fenwick (Peter) & Fenwick (Elizabeth) - The Truth in the Light: An Investigation of Over 300 Near-Death Experiences", which also rejects the “shoe” case, but for different reasons to that on the Infidels site: See OBEs2826.
    2. Out of Body Experiences2827
      1. As is the case with Near Death Experiences2828, which sometimes include them, OBEs offer various challenges to physicalist2829 accounts of the mind2830, and to animalist2831 accounts of what we are2832.
      2. OBEs may or may not be a concomitant of an NDE. They seem sometimes to occur during other crisis times of illness.
      3. An example – see "BBC, Burgess (Gary) - Why do we know so little about ME?" – was given in March 2018 by a reporter suffering from Myalgic Encephalomyelitis, also known as ME, or Chronic Fatigue Syndrome (CFS). He stated quite casually, without any self-consciousness about the prima facie absurdity of his account – “In the middle of a piece about maternity and paternity benefits, during the 6pm news programme, I had the most wonderful sensation. I left my body, was suddenly up in the studio ceiling, and was looking down on myself, the presenters, and all of the camera crew. I was having an out-of-body experience.”
      4. The question is – of course – whether these experiences are of anything outside the mind2833. Do they really prove that something like a soul2834 can wander out of the body2835?
      5. A difficult situation to “explain away” is where the NDE-experiencer claims – as in the example above – to see something (while having an Out of Body Experience) they could not have seen under normal circumstances. The difficulty with evaluating such reports is that they are either vague and unsurprising, or anecdotal and hard to verify – so the presumption is that they aren’t veridical.
      6. There’s a famous “shoe” case where no follow-up seems to have been possible. There’s a (naturally sceptical) page on Infidels.org ("Augustine (Keith) - Hallucinatory Near-Death Experiences") which references this “shoe” case amongst others.
      7. The case of our reporter is surprisingly off-hand for such a surprising claim. "Blackmore (Susan) - Beyond the Body" asserts that 10% of people claim to have had OBEs. Maybe most also believe in immaterial souls2836, and think that most other people do likewise. So, they may claim more than they strictly observed as a way of making their experience seem more important than those of rival accounts. Rather than thinking they are distorting the evidence-base for this phenomenon, they may simply take it as a fact, and want to share in the glamour associated with having experienced it. Much like alien abduction.
    3. Persistent Vegetative State2837
      1. For information on what a Persistent Vegetative State (PVS) actually is, see for example "Wikipedia - Persistent vegetative state". Note that the Wikipedia article uses the PVS acronym to stand for a Permanent Vegetative State.
      2. It’s never clear whether any such state is permanent, whereas it is clear that it is persistent. In the UK, the state becomes legally “permanent” after 12 months, and the term “continuous” is used in preference to “persistent”.
      3. The medical definition is given there as “A wakeful unconscious state that lasts longer than a few weeks”. Despite the (occasional) wakefulness, there is a “complete lack of cognitive function”.
      4. The interest in the Persistent Vegetative State within the topic of Personal Identity is that when in a PVS the attributes of personhood2838 are not in evidence – and maybe not capable of being evidenced – so that it is possible to argue that the individual2839 in the PVS is no longer a person2840. It thus provides the opportunity to pull apart such prima facie co-referential terms as Human Person2841 and Human Being2842 (or Human Animal2843).
      5. One may wonder why PVS is used in philosophical Thought experiments2844 rather than Coma (a more severe condition). I suppose the issue is that in a PVS the brain-stem2845 is substantially intact (whatever other brain-damage has been incurred), so that no life-support is required other than feeding tubes. In irreversible comas, the brain-stem may be so severely damaged that the basic functions of the organism2846 cannot be carried on without life2847 support. Consequently, there’s no debate whether those in a PVS are animals2848, whereas it might be argued that those on life support in an irreversible coma are not. Hence, while the PVS definitely distinguishes human animals2849 from human persons2850 (according to most definitions), irreversible coma might not.
      6. I had originally put “vegetative functions” (rather than simply “functions”) above, but I’m unconvinced that any activity above cellular level ought to be classed as “vegetative”; but I think the Aristotelian classification is often adopted, where “animal” functions are those involving locomotion and the like, rather than nutrition, respiration, etc.
  2. Life After Death2851
    1. Here we must discuss possible ways in which post-mortem2852 survival2853 might be actualised, namely:-
      1. Resurrection2854,
      2. Reincarnation2855, or
      3. Immortality2856 of the Soul2857.
    2. To this list might be added the collection of hopeful possibilities expected by the Transhumanists2858.
    3. We will discuss here broad issues rather than the specifics of the particular options.
    4. We need to discuss whether life2859 after death2860 – in the sense of eternal, or at least unending, life – is to be desired, though this can mostly be hived off to the Makropulos Case2861.
    5. I’m not interested in cases of resuscitation, which are commolace these days. The paradigm cases I’m interested in are after the total – or near-total – destruction of the body2862.
    6. Resuscitation is probably best dealt with under the head of Near Death Experiences2863, but see
      1. "Moody (Raymond A.) - Life After Life", and
      2. "Moody (Raymond A.) - The Light Beyond".
    7. Mark Johnston thinks (in "Johnston (Mark) - Surviving Death") that there’s a forensic2864 need for post-mortem survival2865 of some sort, as otherwise there’s no incentive to be good, and hopes to provide it by a radical redefinition of what the person2866 is. But this strikes me as changing the subject.
    8. "Martin (L. Michael) & Augustine (Keith) - The Myth of an Afterlife: The Case against Life After Death" is a comprehensive sceptical attack on the possibility of post mortem survival.
    1. Resurrection2867
      1. Belief in a resurrection to paradise has occasionally pernicious effects and is also important to millions of non-explosive Americans. Consequently, the metaphysical2868 possibility2869 of the resurrection of beings like us2870 is very important.
      2. This Thesis will aim to prove that resurrection requires substance dualism2871.
      3. I will need to ensure I understand just what is believed by intellectually-respectable Jews, Christians and Muslims (though the topical believers are not amongst the ranks of the intellectually-respectable).
      4. Some discussion will be had about the orthodox Christian view being that there is no continuity of matter2872 (the conundrum about the person consumed by cannibals was early recognised), and that the resurrection body2873 is said to be in some sense a “spiritual” body.
      5. A good place to start for an understanding of what resurrection meant to Christians prior to the modern era is "Bynum (Caroline) - Resurrection of the Body in Western Christianity, 200 - 1336".
      6. The best place to start evaluating contemporary Christian philosophical views on the metaphysical possibility of resurrection is "Gasser (Georg), Ed. - Personal Identity and Resurrection: How Do We Survive Our Death?".
      7. One thing that strikes me is that the resurrection of Christ, taken to be the guarantee of our own resurrection, is no such thing in the sense of “showing it can be done”. The physical2874 and metaphysical issues in resurrecting Jesus (or Lazarus, or Jairus’s daughter, or any recently-deceased2875 person whose body2876 is substantially intact) are much less than in the case of those whose bodies have been destroyed. Indeed, it might one day be possible2877 to resurrect the recently-deceased2878 by way of microscopic repair; at least this seems conceivable, whereas the resurrection of a human being whose body has become dispersed and whose parts have been recycled doesn’t even seem to make sense (on a materialist2879 account of what we human persons2880 are).
    2. Reincarnation2881
      1. "Perrett (Roy W.) - Rebirth" makes a case for the metaphysical coherence of the traditional Indian account of rebirth – preferring the term “Rebirth” to “Reincarnation” because Buddhists deny the existence of an eternal Soul2882, which may be presupposed by the concept of Reincarnation.
      2. My intuition2883 is that – as well as doubts about its actual occurrence – Reincarnation suffers from even more philosophical problems from the perspective of personal identity than does resurrection itself.
      3. However, I’m substantially ignorant of the detailed philosophy and theology underpinning these ideas, though have read the rebuttal "Edwards (Paul) - Reincarnation: A Critical Examination".
  3. Interim States
    1. Corpses2884
      1. The “Corpse Problem”
        • Corpses are troublesome2885 for animalism2886, which alleges (correctly in my view) that corpses are not animals2887.
        • The claim is that, at death2888, something ontologically2889 new comes on the scene – because a corpse has different persistence2890 conditions2891 (those of masses of matter2892) to those of organisms2893.
        • Some philosophers – eg. Fred Feldman, in "Feldman (Fred) - The Survival of Death" – disagree. Feldman claims that we survive2894 death2895, but – rather disappointingly – as a corpse, which solves the “corpse problem”, but at the cost – most likely – of saying that we are bodies2896 rather than organisms2897.
        • The problem if we don’t survive death as our corpses – it is said – is to answer the question where the corpse comes from, and to answer the objection that if it was there all along – as a “corpse-to-be” – then we have a situation where we have two things of different sorts2898 in the same place2899 at the same time.
        • If this is taken seriously, then it can be used against the form of the animalism’s “too many thinkers2900” argument.
        • I’m willing to accept that this “thinking animal” argument is unsound. However, just how the analogy would work for the “corpse-to-be” needs to be spelled out. The corpse has the persistence conditions2901 of a mass of matter2902. What are the persistence conditions2903 of the “corpse-to-be”? If they are those of an organism2904, then then the corpse-to-be cannot be the same individual2905 as the corpse, though the Constitution View2906 might be happy with this situation.
      2. Resurrection
        • Corpses are probably also important for most Christian materialists2907 who hope for some form of resurrection2908.
        • If there is a corpse to be resurrected2909, it is easier to see how identity is preserved than if we have total destruction. This is obviously so in the case of resuscitation, but even where we have a real case of death2910 – not just clinical death, or brain death2911, but real death with a bit of mouldering – there is some physical thing that is responsible for preserving identity.
    2. Disembodied Existence2912
      1. As an Animalist2913, I don’t hold out much hope for disembodied existence for such beings as ourselves2914.
      2. It is true that most people, most of the time, seem to have thought it possible – or even certain. Presumably it is closely related to the view that we are – or at least have – immortal2915 souls2916 that survive the death2917 of our bodies2918. Maybe there are alternative “possibilities” to explain the origins of the belief. But there are worries whether disembodied existence is even coherent for concrete particulars.
      3. Note that “disembodied” is sometimes used for “disembodied brains”. Since the brain2919 is part of the body2920, I cover such possibilities under Brains In Vats2921.
      4. There is some overlap between this topic and at least one topic in Transhumanism2922. The idea behind Uploading2923 seems to be that we are “patterns in information2924 space” (Andy Clark) and these “patterns” could – in principle – be uploaded2925 to a computer2926. The entities resulting from such uploads would appear to be disembodied, at least if their experience (assuming that they are conscious2927) is of having simulated bodies2928 they don’t really have, as in The Matrix. But, all this illusion aside, are these minds2929 actually disembodied, or are their “bodies2930” (parts of) the computer2931 that “runs” them?
    3. Interregnum2932
      1. This is a term of art for the (supposed) period between death2933 and reincarnation2934, of which this is a sub-topic. I think the term is due to Paul Edwards.
      2. The problem with this period – whatever it is called – is that it may seem to imply intermittent existence2935.
      3. Alternatively, it has to rely on some alternative substrate for the existence2936 of which there is little or no evidence.
      4. The obvious candidate is a substantial soul2937. However, it seems that orthodox Hinduism thinks of a rather tenuous “astral body” as providing the link.
      5. That said, the same issue arises for any post-mortem survival2938 that is alleged to follow the total destruction of the body2939. At least reincarnation2940 has some tenuous evidence in its favour, whereas there are – as far as I’m aware – no claimed occurrences of the resurrection2941 of a totally-destroyed body2942.
      6. I suppose that theists might claim that the information2943 that constitutes2944 a person2945 is held in the mind of God during the interregnum.
  4. Immortality2946
    1. In the Biblical Christian tradition, God is the only being with natural immortality (see 1 Timothy 6:16 “God … who alone is immortal”, NIV), but Plato (and his Platonising Christian followers) had it that the (human) soul2947 is also naturally immortal. The Biblical view – at least on some interpretations – is rather that God gives or denies immortality to whoever he wishes (and there is consequently no need to eternally roast the immortal souls of the wicked).
    2. St. Paul has it that “the perishable must clothe itself with the imperishable, and the mortal with immortality” (1 Corinthians 15:53, NIV). This is in the context of the resurrection2948 of the just dead2949 (or the metamorphosis2950 of the just living) at the return of Christ.
    3. In the context of identity theory, it is doubtful whether the very same thing can at one time be perishable and at another time immortal, because a thing’s persistence conditions2951 are taken to be essential2952 properties2953 of the sort2954 it is, and a single thing cannot change sort2955,2956.
    4. As such, (as "Johnston (Mark) - Surviving Death" notes), natural immortality of the soul2957 is the only hope for post-mortem survival2958. But this hope is itself dashed by the lack of empirical evidence for the existence of the substantial2959 soul2960, immortal or otherwise.
    5. It does seem incongruous to talk about post-mortem immortality – how can something that has died be immortal? The idea, no doubt, is that it is the body2961 that the soul2962 occupied that was mortal. Hence, the soul2963 needs a new immortal body2964 to be clothed with. That seems to be the Pauline picture, though debated by the “Conditional Immortality” people.
    6. The Transhumanists2965 hope that Uploading2966 to a computer2967 might lead to indefinitely extended life2968, though this is hardly immortality. Indefinite identity-preserving life extensions might be possible using repair-microbots.
    7. In all this, I’m talking about the persistence of the individual2969. I’m not talking about “immortality” in the sense of “undying fame”. As Woody Allen quipped (I’m not sure where this is from, but see Woody Allen: Immortality) – “I don't want to achieve immortality through my work; I want to achieve immortality through not dying. I don't want to live on in the hearts of my countrymen; I want to live on in my apartment”.
    8. "Williams (Bernard) - The Makropulos Case: Reflections on the Tedium of Immortality" argues that we wouldn’t even want immortality, but I’m not convinced. However, a bad immortality – uploading2970 to an evil computer2971, for instance – would be worse than no immortality, though some (eg. Miguel De Unamuno) are not even convinced of that. This topic is covered further under the Makropulos Case2972.
    9. Of course, if animalism2973 is the correct account of personal identity, immortality is not on offer, though if the transhumanists2974 succeed, and an alternative account of personal identity is correct, an indefinite extension of life might be possible.
    1. Ivan Ilych2975
      1. Tolstoy’s short novella "Tolstoy (Leo) - The Death of Ivan Ilyich" tends to feature in discussions on the philosophy of death2976.
      2. I first came upon it via "Kagan (Shelly) - The nature of death (continued); Believing you will die". The contention in Kagan’s lecture was that Tolstoy’s novella taught that no-one really expects to die, an idea Kagan rejects.
      3. My own view is that this isn’t really what the novella is about, but is rather about how we should live our lives – or at least how we should not live them.
      4. In this Note, I intend to consider two main questions:-
        1. Does Tolstoy suggest that no-one really expects to die?
        2. What is the aim of the novella?
      5. As I’m not a literary critic, I’ll be somewhat briefer with regards to the second question than Tolstoy’s work deserves.
      6. The explicit passage on the expectation of death is where Ivan – on hearing that he is about to die – observes that the syllogism beginning “all men are mortal” applies to “all men”, but not specifically to him.
      7. Of course, no-one really believes they are immortal2977 (or, at least, that they are not going to die) but the reality of personal death2978 is pushed so far into the background that it is hardly taken into account in our plans (other than in the making of rather impersonal provisions), until it is just around the corner. Our plans always extend infinitely on, without the explicit acknowledgement until the last possible minute that we – and more urgently our faculties – will not continue on for ever, and that we need to eke out our time more carefully.
      8. No doubt this is especially true of the young, but I can vouch for the fact that it’s still true of at least one person aged 622979.
    2. Makropulos Case2980
      1. This Note will investigate the controversy started in 1973 by "Williams (Bernard) - The Makropulos Case: Reflections on the Tedium of Immortality".
      2. It is slightly off-topic, in that the focus isn’t on whether there is, in fact, any such thing as immortality2981 (for human beings2982).
      3. Rather, it is whether immortality – again for embodied human beings – would be desirable (or, indeed, tolerable).
      4. Williams’s conclusion – needless to say – is that it is not, though his reasoning is rather subtle.
      5. Thoughts on the value – or disvalue – of immortality2983 tie in with the evil – or lack of evil – of death2984. Some of the items in the reading list mention the Makropulos Case in that regard.
      6. All discussion of the evils of death2985 will fall under this Note.
      7. Since animalism2986 strongly implies that “death is the end of us”, this may be important.

Concluding Remarks
  1. Having now discussed everything on our Agenda, we now in our next Chapter2987 make our conclusions.

Chapter 11: Resurrection2988

Abstract
Chapter Introduction2989
  1. While I wish in this chapter seriously to consider the religious hope of Resurrection, I do not want to get side-tracked onto matters of Scriptural exegesis, or into evidential matters of whether particular resurrections – specifically of Jesus – happened or not. In this regard, I’m interested only in what believers in resurrection take it to be, and whether they provide any detailed metaphysical account of how it is supposed to work.
  2. As in the chapter on Thought Experiments, this chapter is partly aimed at checking how (my version of) Animalism copes with the projected situations. As such, I may extend this to other posited versions of post-mortem survival, though most are ruled out by the essentially physical nature of the human person as proposed by Animalism.
  3. While not wanting to get too far off topic, especially at the end of the thesis, I want to consider some of the ethical consequences of adopting Animalism with – as I have argued – the lack of hope of post-mortem existence. The topic of “Death and Ethics” is already a bit tangential to my thesis, but there’s a set of questions in which I have an interest and on which I wonder whether my views on Personal Identity have anything to say. These two are the most important:-
    • Why is death bad (for the deceased)?, and
    • Can the dead be harmed (assuming they no longer exist)?
  4. So, we start off with a discussion of Death2990, which – like Life (discussed in Chapter 6 – I take to be a biological event (or rather a Process). We touched on Brain Death in Chapter 2. Despite its pragmatic utility (which I suspect is the main motivator for accepting it as a criterion of Death) this idea is rather confused on any Biological View of What We Are.
  5. I will also discuss certain occasional events on the periphery of Death, namely Near Death Experiences2991 and Out of Body Experiences2992. Do these events have anything to say about “where we’re going”, in the first case, or what we are, in the second?
  6. Getting closer to Death, I need to discuss Persistent Vegetative States2993. From an Animalist perspective, such persons are not dead – any more than the Brain-dead are Dead – but whether they should be kept alive is (I would claim) primarily a pragmatic issue to do with the use of resources, coupled with consideration of what life is like – if there is anything – for those in such a state.
  7. Then we get to the meat of the Chapter – discussion of Life after Death2994. What is it supposed to involve, where is it enjoyed, and how do we get there? Clearly, there are many options. The question is are any of them possible – and, better – actual?
  8. The two options I consider are Resurrection2995 and Reincarnation2996. In both cases, the big question is what makes it the case that the individual Resurrected or Reincarnated the same individual as the one who died. I suspect ‘nothing’ in the absence of a Soul, though much argumentation is required to reach this conclusion in the face of objections and various suggestions for possible mechanisms.
  9. We discussed Uploading to a Computer as a (bare) possibility for Life after Death in the Previous Chapter.
  10. In this regard, we need to discuss the possible interim states between Death and putative post-mortem survival. I need to discuss Corpses2997, which – in some of the easiest cases – are (supposed to be) the mediators of continuity of identity between Death and Resurrection. Corpses also cause philosophical worries – on many physicalist accounts of Personal Identity – about where they “come from” and whether “we” end up as Corpses.
  11. We need to discuss the possibility of Disembodied Existence2998 (which I imagine is the Interregnum2999 for Reincarnation) together with a reconsideration of Intermittent Objects discussed in Chapter 5.
  12. Finally, we need to reflect on the consequences of Life after Death, which is usually taken to be Immortality3000 (though supporters of the ‘conditional immortality’ position in Christianity have Resurrection followed by destruction for those found unworthy of eternal life.
  13. Before doing so, I will reflect on the supposed difficulty – displayed by Tolstoy’s Ivan Ilych3001 of accepting the inevitability of our own deaths.
  14. But, is Immortality really something to be desired? Reflection on the Makropulos Case3002 suggests that an infinite life would be unbearably tedious, even though at each possible terminus we might want to live on.

Main Text
  1. Death3003
    1. Death is important to our study because we’re considering our persistence conditions3004, whether we consider ourselves to be
      1. Human Persons3005.
      2. Human Animals3006 (members of the species homo sapiens3007), or
      3. Human Beings3008
      and death would seem to be the terminus of such existence3009.
    2. That this is so has often been resisted, which is why we must consider such matters as:-
      1. Resurrection3010,
      2. Reincarnation3011, and
      3. Disembodied Existence3012.
    3. Death should be considered a biological event, or maybe – better – a process3013. It is the termination of life3014, which is also a biological process, though usually a longer one.
    4. Other forms of – and terminations of – existence3015 may be termed “life” or “death”, but these are metaphorical expressions used by analogy with biological life or death. So, is the resurrection3016 life – if there is one – really “life” or a continued and enhanced form of existence3017? Also, is the “second death” really “death”? I suppose we would allow alternative metabolisms to count as “life3018”, so that an Android3019 that maintained itself might be said to be “alive”; and, consequently, the destruction of such a being might be classified as “death”.
    5. A particular case of the above is Brain Death3020. It’s a large question for Animalists3021 – and for holders of the Psychological View3022 – whether Brain3023 Death is really death, or whether it is (for holders of the PV3024) the death (or end) of the Person3025.
    6. As a spin-off from the (alleged) Corpse Problem3026 for animalism3027, we need to discuss the process3028 of dying – the transition from life3029 to death. Just when does death occur (for human animals3030)? No doubt there is a degree of vagueness3031 here (though ascribing ‘vagueness’ to such a ‘terminal’ event as death seems counter-intuitive).
      → See "Shoemaker (David) - Personal Identity, Rational Anticipation, and Self-Concern", p. 81 for this objection to animalism3032.
    7. Consideration of whether we should fear death, or the process3033 of dying, is probably beyond the bounds of this Thesis. However, for a comforting account of the normal process of dying in old age, see this “short” from the BBC: BBC: Dying is not as bad as you think. The author – a medical doctor (Kathryn Mannix – see With the End In Mind) – talks about the “good death” and the process of dying in your bed being not so scary. The dying drift in and out of consciousness3034, and return from unconsciousness feeling much as after a refreshing sleep, so we know the coma doesn’t feel frightening and isn’t noticed when it happens. The “death rattle” shows just how relaxed you were. Normal dying is a really gentle process.
    8. Would that were the way for all, rather than as the result of a rather painful trauma3035 when you’re not ready to go.
    1. Near Death Experiences3036
      1. NDEs, if they are experiences of anything veridical:-
        1. Offer a serious challenge to those who deny the possibility or actuality of life after death3037,
        2. Appear to offer support for non-physicalist accounts of the mind and
        3. Cause problems for animalists3038 by lending support to alternative accounts of what we are3039 – maybe souls3040.
      2. Most of the phenomena – which I need to document and comment on (see "Wikipedia - Near-death experience") – can probably be explained by the usual “dying brain” / anoxia / endorphins suggestions, though this can be rather facile – partly because not all NDEs are had by those near death3041, but also because the dying brain3042 might not be up to the job of having (and remembering3043) scenes of such alleged clarity. However, see "Jarrett (Christian) - Ketamine trips are uncannily like near-death experiences", which reports on a study that makes a detailed connection between the experiences of Ketamine (and LSD) users and NDE-reports.
      3. I have my doubts about when such experiences actually occur – but the suggestion that they occur when the experiencer is “coming round” doesn’t seem to be popular.
      4. A difficult situation to “explain away” is where the NDE-experiencer claims to see something (while having an Out of Body Experience3044) they could not have seen under normal circumstances.
      5. Further “awkward” cases to dispose of are where experiences analogous to the NDE are had by / shared with friends / relatives of the dying. I presume these accounts should be rejected out of hand, along with all other incredible reports of exotic parapsychological phenomena. The Fenwicks give a sympathetic hearing to (the then) recent results of parapsychological research – but in an undocumented way, and showing unawareness that the claims are of slight (though allegedly statistically significant) deviations from chance, not of the exotic phenomena exhibited in the accounts of NDEs. See "Fenwick (Peter) & Fenwick (Elizabeth) - The Truth in the Light: An Investigation of Over 300 Near-Death Experiences", which also rejects the “shoe” case, but for different reasons to that on the Infidels site: See OBEs3045.
    2. Out of Body Experiences3046
      1. As is the case with Near Death Experiences3047, which sometimes include them, OBEs offer various challenges to physicalist3048 accounts of the mind3049, and to animalist3050 accounts of what we are3051.
      2. OBEs may or may not be a concomitant of an NDE. They seem sometimes to occur during other crisis times of illness.
      3. An example – see "BBC, Burgess (Gary) - Why do we know so little about ME?" – was given in March 2018 by a reporter suffering from Myalgic Encephalomyelitis, also known as ME, or Chronic Fatigue Syndrome (CFS). He stated quite casually, without any self-consciousness about the prima facie absurdity of his account – “In the middle of a piece about maternity and paternity benefits, during the 6pm news programme, I had the most wonderful sensation. I left my body, was suddenly up in the studio ceiling, and was looking down on myself, the presenters, and all of the camera crew. I was having an out-of-body experience.”
      4. The question is – of course – whether these experiences are of anything outside the mind3052. Do they really prove that something like a soul3053 can wander out of the body3054?
      5. A difficult situation to “explain away” is where the NDE-experiencer claims – as in the example above – to see something (while having an Out of Body Experience) they could not have seen under normal circumstances. The difficulty with evaluating such reports is that they are either vague and unsurprising, or anecdotal and hard to verify – so the presumption is that they aren’t veridical.
      6. There’s a famous “shoe” case where no follow-up seems to have been possible. There’s a (naturally sceptical) page on Infidels.org ("Augustine (Keith) - Hallucinatory Near-Death Experiences") which references this “shoe” case amongst others.
      7. The case of our reporter is surprisingly off-hand for such a surprising claim. "Blackmore (Susan) - Beyond the Body" asserts that 10% of people claim to have had OBEs. Maybe most also believe in immaterial souls3055, and think that most other people do likewise. So, they may claim more than they strictly observed as a way of making their experience seem more important than those of rival accounts. Rather than thinking they are distorting the evidence-base for this phenomenon, they may simply take it as a fact, and want to share in the glamour associated with having experienced it. Much like alien abduction.
    3. Persistent Vegetative State3056
      1. For information on what a Persistent Vegetative State (PVS) actually is, see for example "Wikipedia - Persistent vegetative state". Note that the Wikipedia article uses the PVS acronym to stand for a Permanent Vegetative State.
      2. It’s never clear whether any such state is permanent, whereas it is clear that it is persistent. In the UK, the state becomes legally “permanent” after 12 months, and the term “continuous” is used in preference to “persistent”.
      3. The medical definition is given there as “A wakeful unconscious state that lasts longer than a few weeks”. Despite the (occasional) wakefulness, there is a “complete lack of cognitive function”.
      4. The interest in the Persistent Vegetative State within the topic of Personal Identity is that when in a PVS the attributes of personhood3057 are not in evidence – and maybe not capable of being evidenced – so that it is possible to argue that the individual3058 in the PVS is no longer a person3059. It thus provides the opportunity to pull apart such prima facie co-referential terms as Human Person3060 and Human Being3061 (or Human Animal3062).
      5. One may wonder why PVS is used in philosophical Thought experiments3063 rather than Coma (a more severe condition). I suppose the issue is that in a PVS the brain-stem3064 is substantially intact (whatever other brain-damage has been incurred), so that no life-support is required other than feeding tubes. In irreversible comas, the brain-stem may be so severely damaged that the basic functions of the organism3065 cannot be carried on without life3066 support. Consequently, there’s no debate whether those in a PVS are animals3067, whereas it might be argued that those on life support in an irreversible coma are not. Hence, while the PVS definitely distinguishes human animals3068 from human persons3069 (according to most definitions), irreversible coma might not.
      6. I had originally put “vegetative functions” (rather than simply “functions”) above, but I’m unconvinced that any activity above cellular level ought to be classed as “vegetative”; but I think the Aristotelian classification is often adopted, where “animal” functions are those involving locomotion and the like, rather than nutrition, respiration, etc.
  2. Life After Death3070
    1. Here we must discuss possible ways in which post-mortem3071 survival3072 might be actualised, namely:-
      1. Resurrection3073,
      2. Reincarnation3074, or
      3. Immortality3075 of the Soul3076.
    2. To this list might be added the collection of hopeful possibilities expected by the Transhumanists3077.
    3. We will discuss here broad issues rather than the specifics of the particular options.
    4. We need to discuss whether life3078 after death3079 – in the sense of eternal, or at least unending, life – is to be desired, though this can mostly be hived off to the Makropulos Case3080.
    5. I’m not interested in cases of resuscitation, which are commolace these days. The paradigm cases I’m interested in are after the total – or near-total – destruction of the body3081.
    6. Resuscitation is probably best dealt with under the head of Near Death Experiences3082, but see
      1. "Moody (Raymond A.) - Life After Life", and
      2. "Moody (Raymond A.) - The Light Beyond".
    7. Mark Johnston thinks (in "Johnston (Mark) - Surviving Death") that there’s a forensic3083 need for post-mortem survival3084 of some sort, as otherwise there’s no incentive to be good, and hopes to provide it by a radical redefinition of what the person3085 is. But this strikes me as changing the subject.
    8. "Martin (L. Michael) & Augustine (Keith) - The Myth of an Afterlife: The Case against Life After Death" is a comprehensive sceptical attack on the possibility of post mortem survival.
    1. Resurrection3086
      1. Belief in a resurrection to paradise has occasionally pernicious effects and is also important to millions of non-explosive Americans. Consequently, the metaphysical3087 possibility3088 of the resurrection of beings like us3089 is very important.
      2. This Thesis will aim to prove that resurrection requires substance dualism3090.
      3. I will need to ensure I understand just what is believed by intellectually-respectable Jews, Christians and Muslims (though the topical believers are not amongst the ranks of the intellectually-respectable).
      4. Some discussion will be had about the orthodox Christian view being that there is no continuity of matter3091 (the conundrum about the person consumed by cannibals was early recognised), and that the resurrection body3092 is said to be in some sense a “spiritual” body.
      5. A good place to start for an understanding of what resurrection meant to Christians prior to the modern era is "Bynum (Caroline) - Resurrection of the Body in Western Christianity, 200 - 1336".
      6. The best place to start evaluating contemporary Christian philosophical views on the metaphysical possibility of resurrection is "Gasser (Georg), Ed. - Personal Identity and Resurrection: How Do We Survive Our Death?".
      7. One thing that strikes me is that the resurrection of Christ, taken to be the guarantee of our own resurrection, is no such thing in the sense of “showing it can be done”. The physical3093 and metaphysical issues in resurrecting Jesus (or Lazarus, or Jairus’s daughter, or any recently-deceased3094 person whose body3095 is substantially intact) are much less than in the case of those whose bodies have been destroyed. Indeed, it might one day be possible3096 to resurrect the recently-deceased3097 by way of microscopic repair; at least this seems conceivable, whereas the resurrection of a human being whose body has become dispersed and whose parts have been recycled doesn’t even seem to make sense (on a materialist3098 account of what we human persons3099 are).
    2. Reincarnation3100
      1. "Perrett (Roy W.) - Rebirth" makes a case for the metaphysical coherence of the traditional Indian account of rebirth – preferring the term “Rebirth” to “Reincarnation” because Buddhists deny the existence of an eternal Soul3101, which may be presupposed by the concept of Reincarnation.
      2. My intuition3102 is that – as well as doubts about its actual occurrence – Reincarnation suffers from even more philosophical problems from the perspective of personal identity than does resurrection itself.
      3. However, I’m substantially ignorant of the detailed philosophy and theology underpinning these ideas, though have read the rebuttal "Edwards (Paul) - Reincarnation: A Critical Examination".
  3. Interim States
    1. Corpses3103
      1. The “Corpse Problem”
        • Corpses are troublesome3104 for animalism3105, which alleges (correctly in my view) that corpses are not animals3106.
        • The claim is that, at death3107, something ontologically3108 new comes on the scene – because a corpse has different persistence3109 conditions3110 (those of masses of matter3111) to those of organisms3112.
        • Some philosophers – eg. Fred Feldman, in "Feldman (Fred) - The Survival of Death" – disagree. Feldman claims that we survive3113 death3114, but – rather disappointingly – as a corpse, which solves the “corpse problem”, but at the cost – most likely – of saying that we are bodies3115 rather than organisms3116.
        • The problem if we don’t survive death as our corpses – it is said – is to answer the question where the corpse comes from, and to answer the objection that if it was there all along – as a “corpse-to-be” – then we have a situation where we have two things of different sorts3117 in the same place3118 at the same time.
        • If this is taken seriously, then it can be used against the form of the animalism’s “too many thinkers3119” argument.
        • I’m willing to accept that this “thinking animal” argument is unsound. However, just how the analogy would work for the “corpse-to-be” needs to be spelled out. The corpse has the persistence conditions3120 of a mass of matter3121. What are the persistence conditions3122 of the “corpse-to-be”? If they are those of an organism3123, then then the corpse-to-be cannot be the same individual3124 as the corpse, though the Constitution View3125 might be happy with this situation.
      2. Resurrection
        • Corpses are probably also important for most Christian materialists3126 who hope for some form of resurrection3127.
        • If there is a corpse to be resurrected3128, it is easier to see how identity is preserved than if we have total destruction. This is obviously so in the case of resuscitation, but even where we have a real case of death3129 – not just clinical death, or brain death3130, but real death with a bit of mouldering – there is some physical thing that is responsible for preserving identity.
    2. Disembodied Existence3131
      1. As an Animalist3132, I don’t hold out much hope for disembodied existence for such beings as ourselves3133.
      2. It is true that most people, most of the time, seem to have thought it possible – or even certain. Presumably it is closely related to the view that we are – or at least have – immortal3134 souls3135 that survive the death3136 of our bodies3137. Maybe there are alternative “possibilities” to explain the origins of the belief. But there are worries whether disembodied existence is even coherent for concrete particulars.
      3. Note that “disembodied” is sometimes used for “disembodied brains”. Since the brain3138 is part of the body3139, I cover such possibilities under Brains In Vats3140.
      4. There is some overlap between this topic and at least one topic in Transhumanism3141. The idea behind Uploading3142 seems to be that we are “patterns in information3143 space” (Andy Clark) and these “patterns” could – in principle – be uploaded3144 to a computer3145. The entities resulting from such uploads would appear to be disembodied, at least if their experience (assuming that they are conscious3146) is of having simulated bodies3147 they don’t really have, as in The Matrix. But, all this illusion aside, are these minds3148 actually disembodied, or are their “bodies3149” (parts of) the computer3150 that “runs” them?
    3. Interregnum3151
      1. This is a term of art for the (supposed) period between death3152 and reincarnation3153, of which this is a sub-topic. I think the term is due to Paul Edwards.
      2. The problem with this period – whatever it is called – is that it may seem to imply intermittent existence3154.
      3. Alternatively, it has to rely on some alternative substrate for the existence3155 of which there is little or no evidence.
      4. The obvious candidate is a substantial soul3156. However, it seems that orthodox Hinduism thinks of a rather tenuous “astral body” as providing the link.
      5. That said, the same issue arises for any post-mortem survival3157 that is alleged to follow the total destruction of the body3158. At least reincarnation3159 has some tenuous evidence in its favour, whereas there are – as far as I’m aware – no claimed occurrences of the resurrection3160 of a totally-destroyed body3161.
      6. I suppose that theists might claim that the information3162 that constitutes3163 a person3164 is held in the mind of God during the interregnum.
  4. Immortality3165
    1. In the Biblical Christian tradition, God is the only being with natural immortality (see 1 Timothy 6:16 “God … who alone is immortal”, NIV), but Plato (and his Platonising Christian followers) had it that the (human) soul3166 is also naturally immortal. The Biblical view – at least on some interpretations – is rather that God gives or denies immortality to whoever he wishes (and there is consequently no need to eternally roast the immortal souls of the wicked).
    2. St. Paul has it that “the perishable must clothe itself with the imperishable, and the mortal with immortality” (1 Corinthians 15:53, NIV). This is in the context of the resurrection3167 of the just dead3168 (or the metamorphosis3169 of the just living) at the return of Christ.
    3. In the context of identity theory, it is doubtful whether the very same thing can at one time be perishable and at another time immortal, because a thing’s persistence conditions3170 are taken to be essential3171 properties3172 of the sort3173 it is, and a single thing cannot change sort3174,3175.
    4. As such, (as "Johnston (Mark) - Surviving Death" notes), natural immortality of the soul3176 is the only hope for post-mortem survival3177. But this hope is itself dashed by the lack of empirical evidence for the existence of the substantial3178 soul3179, immortal or otherwise.
    5. It does seem incongruous to talk about post-mortem immortality – how can something that has died be immortal? The idea, no doubt, is that it is the body3180 that the soul3181 occupied that was mortal. Hence, the soul3182 needs a new immortal body3183 to be clothed with. That seems to be the Pauline picture, though debated by the “Conditional Immortality” people.
    6. The Transhumanists3184 hope that Uploading3185 to a computer3186 might lead to indefinitely extended life3187, though this is hardly immortality. Indefinite identity-preserving life extensions might be possible using repair-microbots.
    7. In all this, I’m talking about the persistence of the individual3188. I’m not talking about “immortality” in the sense of “undying fame”. As Woody Allen quipped (I’m not sure where this is from, but see Woody Allen: Immortality) – “I don't want to achieve immortality through my work; I want to achieve immortality through not dying. I don't want to live on in the hearts of my countrymen; I want to live on in my apartment”.
    8. "Williams (Bernard) - The Makropulos Case: Reflections on the Tedium of Immortality" argues that we wouldn’t even want immortality, but I’m not convinced. However, a bad immortality – uploading3189 to an evil computer3190, for instance – would be worse than no immortality, though some (eg. Miguel De Unamuno) are not even convinced of that. This topic is covered further under the Makropulos Case3191.
    9. Of course, if animalism3192 is the correct account of personal identity, immortality is not on offer, though if the transhumanists3193 succeed, and an alternative account of personal identity is correct, an indefinite extension of life might be possible.
    1. Ivan Ilych3194
      1. Tolstoy’s short novella "Tolstoy (Leo) - The Death of Ivan Ilyich" tends to feature in discussions on the philosophy of death3195.
      2. I first came upon it via "Kagan (Shelly) - The nature of death (continued); Believing you will die". The contention in Kagan’s lecture was that Tolstoy’s novella taught that no-one really expects to die, an idea Kagan rejects.
      3. My own view is that this isn’t really what the novella is about, but is rather about how we should live our lives – or at least how we should not live them.
      4. In this Note, I intend to consider two main questions:-
        1. Does Tolstoy suggest that no-one really expects to die?
        2. What is the aim of the novella?
      5. As I’m not a literary critic, I’ll be somewhat briefer with regards to the second question than Tolstoy’s work deserves.
      6. The explicit passage on the expectation of death is where Ivan – on hearing that he is about to die – observes that the syllogism beginning “all men are mortal” applies to “all men”, but not specifically to him.
      7. Of course, no-one really believes they are immortal3196 (or, at least, that they are not going to die) but the reality of personal death3197 is pushed so far into the background that it is hardly taken into account in our plans (other than in the making of rather impersonal provisions), until it is just around the corner. Our plans always extend infinitely on, without the explicit acknowledgement until the last possible minute that we – and more urgently our faculties – will not continue on for ever, and that we need to eke out our time more carefully.
      8. No doubt this is especially true of the young, but I can vouch for the fact that it’s still true of at least one person aged 623198.
    2. Makropulos Case3199
      1. This Note will investigate the controversy started in 1973 by "Williams (Bernard) - The Makropulos Case: Reflections on the Tedium of Immortality".
      2. It is slightly off-topic, in that the focus isn’t on whether there is, in fact, any such thing as immortality3200 (for human beings3201).
      3. Rather, it is whether immortality – again for embodied human beings – would be desirable (or, indeed, tolerable).
      4. Williams’s conclusion – needless to say – is that it is not, though his reasoning is rather subtle.
      5. Thoughts on the value – or disvalue – of immortality3202 tie in with the evil – or lack of evil – of death3203. Some of the items in the reading list mention the Makropulos Case in that regard.
      6. All discussion of the evils of death3204 will fall under this Note.
      7. Since animalism3205 strongly implies that “death is the end of us”, this may be important.

Concluding Remarks
  1. Having now discussed everything on our Agenda, we now in our next Chapter3206 make our conclusions.
Chapter 12: Conclusion3207

Abstract
Chapter Introduction
  1. To be supplied3208.

Main Text
  1. To be supplied3209.

Concluding Remarks
  1. This is work in progress3210.
Appendix: Outstanding Tasks
Actions – Textual / Research


In-Page Footnotes:

Footnote 23: Footnote 25: Footnote 50: Footnote 52: Key texts include:-
  1. "Baillie (James) - Problems in Personal Identity"
  2. "Haslanger (Sally) & Kurtz (Roxanne), Eds. - Persistence : Contemporary Readings"
  3. "Hirsch (Eli) - The Concept of Identity"
  4. "Kolak (Daniel) & Martin (Raymond), Eds. - Self and Identity: Contemporary Philosophical Issues"
  5. "Martin (Raymond) & Barresi (John), Eds. - Personal Identity"
  6. "Munitz (Milton) - Identity and Individuation"
  7. "Noonan (Harold) - Personal Identity"
  8. "Noonan (Harold), Ed. - Identity"
  9. "Noonan (Harold), Ed. - Personal Identity (Readings)"
  10. "Paul (Ellen), Miller (Fred) & Paul (Jeffrey), Eds. - Personal Identity"
  11. "Perry (John) - Identity, Personal Identity and the Self"
  12. "Perry (John), Ed. - Personal Identity"
  13. "Rorty (Amélie Oksenberg), Ed. - The Identities of Persons"
  14. "Shoemaker (Sydney) & Swinburne (Richard) - Personal Identity"
Footnote 76:
  1. "Todman (Theo) - Locke on Personal Identity".
  2. The literature on Locke – even restricted to this topic – is vast.
  3. We start from "Locke (John) - Of Identity and Diversity", of course.
  4. Then "Ayers (Michael R.) - Locke's Theory of Personal Identity".
Footnote 153:
  1. Note, however, that for Lynne Rudder Baker the FPP is bound to her concept of a Person. The ‘P’ is ontological rather than merely grammatical.
  2. So, for her, non-persons may have a window on the world, but not a FPP.
Footnote 181: Footnote 184:
  1. On an endurantist account of persistence.
  2. I treat of the distinction between endurantism and perdurantism in Chapter5: Persistence and Time.
Footnote 185:
  1. I don’t think this – ‘duplicating’ – is here a tendentious term.
  2. The intended use of the machine is to produce an exact copy without destroying the original.
  3. So, this isn’t the same as Dennett’s “Telecloning” machine in "Dennett (Daniel) - The Mind's I - Fantasies and Reflections on Self and Soul: Introduction", where the destruction of the original is intended, yet (despite the ‘cloning’ label) the machine is used as a means of transport.
  4. The Teletransportation TE is covered in detail in Chapter10: Thought Experiments.
Footnote 203: In "Clark (Andy) & Kuhn (Robert Lawrence) - Aeon: Video - Andy Clark - Virtual immortality".

Footnote 230:
  1. In "Snowdon (Paul) - The Self and Personal Identity".
Footnote 253:
  1. In Paul Broks’s contribution to "Smith (Barry C.), Broks (Paul), Kennedy (A.L.) & Evans (Jules) - Audio: What Does It Mean to Be Me?".
Footnote 258:
  1. “To die, to sleep – to sleep, perchance to dream – ay, there’s the rub, for in this sleep of death what dreams may come…”
    → Hamlet, Act-III, Scene-I, Lines 66-68
Footnote 415: According to most interpreters.

Footnote 421:
  1. Though the Note on Siliconisation focuses on the replacement of neural organic matter by silicon, the general idea could (more easily, as the technology is already partly there) be extended to the replacement of other body parts.
Footnote 433:
  1. This is to get round the “Corpse Problem” noted previously.
Footnote 456:
  1. Where? I need to check this out.
Footnote 458:
  1. I need to check this.
  2. The idea is that in some lower animals, regulation is distributed throughout the body, with the brain playing a less central role.
  3. This is true of the octopus – a highly intelligent animal – with many neurones distributed throughout its tentacles.
  4. The same is also true (though to a lesser extent) of human animals – the PNS undertakes various co-ordinating functions, which is why brain-transplant TEs are somewhat simplistic.
  5. However, maybe I need to distinguish between different neural functions – regulation, coordination, sensation, etc.
Footnote 474:
  1. Hasn’t someone said this? Who? Wiggins?
  2. This is not to be confused with there being no criteria for identity – ie. for the relation itself – which is due to Merricks (eg. in "Merricks (Trenton) - There Are No Criteria For Identity Over Time").
Footnote 476:
  1. And, of course, “X and Y are both persons”, to cover the case where the brain is insufficient to support the property of personhood.
Footnote 483:
  1. Much of this discussion has empirical aspects to it, and depends on the capabilities of real brains – though we might get into the choppy waters of more intricate TEs, and wonder what might be the case if the biology went differently – but then we would most likely not be talking about our identity criteria, but of some other being.
Footnote 485:
  1. These worries about fission are essentially set to rest by adopting a perdurantist account of persistence.
  2. But, some consider the costs (mainly semantic, I think) of adopting this approach are too great.
Footnote 502: Footnote 533:
  1. I wrote a pre-submitted essay for my BA Finals “What is Descartes’s argument for the ‘real distinction’ between mind and body? Is it a good one?”.
Footnote 549:
  1. There is no unanimity on what a person is; but it will be worth taking candidate definitions and see whether we would be willing to assign selfhood to some non-persons.
Footnote 553:
  1. We are referred to "Seth (Anil Kumar) - Interoceptive inference, emotion, and the embodied self".
Footnote 554:
  1. We are referred to "Ehrsson (H. Henrik) - The Experimental Induction of Out-of-Body Experiences".
Footnote 555:
  1. We are referred to "Haggard (Patrick) - Human volition: towards a neuroscience of will".
Footnote 557:
  1. We are referred to "Frith (Christopher D.) & Frith (Uta) - Mechanisms of Social Cognition".
Footnote 558:
  1. For a recent discussion of this test, and what it does or doesn’t have to say about a sense of self, see "Morell (Virginia) - What do mirror tests test?".
  2. This paper quotes a large number of others that give the history of the test, and which other animals have been said to pass it.
  3. The view of Frans De Waal, and of the paper’s author, is that – whatever the Mirror Test may demonstrate – all animals need a self-concept. This seems like common-sense.
  4. It’s also suggested that evolutionary considerations imply a gradualist – rather than binary – approach to self-conception.
Footnote 570:
  1. See her "Baker (Lynne Rudder) - Christians Should Reject Mind-Body Dualism".
Footnote 577:
  1. Or, rather than “embodied by”, “embodied “as”?
Footnote 579:
  1. For Modularity of Mind, see especially "Fodor (Jerry) - The Modularity of Mind: An Essay on Faculty Psychology".
Footnote 616:
  1. Of course, this is disputed – and I agree with the objections.
  2. Animals that pass the mirror test are usually assumed to have at least a rudimentary sense of self.
  3. See "Desmond (Adrian) - The Ape's Reflexion".
Footnote 629:
  1. Quotation from the cover blurb of "Preyer (Gerhard) & Siebelt (Frank) - Reality and Humean Supervenience: Essays on the Philosophy of David Lewis".
Footnote 638:
  1. This relates the the problem of other minds.
  2. See "Avramides (Anita) - Other Minds".
Footnote 674: See the introduction to "Unger (Peter) - The Mental Problems of the Many" (2004) for a recantation.

Footnote 685:
  1. See Wikipedia: Succession of the 14th Dalai Lama for a discussion of the succession from 14th to 15th Delai Lama.
Footnote 726:
  1. This is – of course – a tricky area, given the long behaviorist tradition of training pigeons.
Footnote 747:
  1. There is no doubt some truth in this.
  2. However, not all wrong-doers had bad starts in life, and I suspect that many who did would prefer to take the punishment if the alternative is the real loss of freedom in a rehabilitation programme.
  3. Compare the Soviet view that dissidents are insane and need curing.
Footnote 749:
  1. See "Todman (Theo) - Aristotle - Sea Battle".
Footnote 798:
  1. See in Dennett, and also my main Note on Persons.
Footnote 804:
  1. See "Todman (Theo) - Review - Frankfurt - Freedom of the Will and the Concept of a Person".
Footnote 848:
  1. No doubt if this fanciful event could be planned or anticipated we would count differently.
Footnote 870:
  1. Mark Johnston: see:-
    → "Johnston (Mark) - Personites, Maximality and Ontological Trash", and
    → "Johnston (Mark) - The Personite Problem: Should Practical Reason Be Tabled?".
  2. I need to chase up the references in Olson.
Footnote 886:
  1. For my commentary on this, see "Todman (Theo) - Review - Wong - Relativism".
Footnote 938:
  1. No doubt there’s a convention as to which is the “first” and which is the “second” of Leibniz’s Laws, but they are often confusingly combined into one law with two parts.
Footnote 944:
  1. Not that Eric Olson is the inventor or even the primary exponent of the concept of numerical identity,
  2. Nor that Marya Schechtman is not a philosopher!
Footnote 978: Footnote 990:
  1. Or at least was thereby brought to my attention as an undergraduate.
Footnote 1168:
  1. There’s an extensive literature on this topic, stemming from Richard Dawkins, which I’ll not pursue here.
  2. There’s a claim in "Harari (Yuval Noah) - Sapiens: A Brief History of Humankind" that the cohesive power of human societies and hence the rise of homo sapiens as a species is down to our shared belief in “fictions”.
  3. Yuval Noah Harari’s use of “fiction” is pejorative and non-standard, as he uses it for anything from religious beliefs to limited companies.
  4. Even those philosophers of religion who use the term “myths” for religious beliefs are keen to assert that “myth” does not men “fiction”, even though some myths are fictions as well.
Footnotes 1304, 1563, 1841, 2049, 2178, 2226, 2770, 2989: Footnote 1399:
  1. I’m warned by a philosopher-friend that “I would beware of stating anything about modern physics as though it were set in stone – have a look at the work of Lee Smolin. There are many contradictions which still need resolution. ”
  2. But, serendipitously, I came across the following passage in Aeon: Baggott - But is it science? (sub-titled “Theoretical physicists who say the multiverse exists set a dangerous precedent: science based on zero empirical evidence”), which shows how embedded the theories of Reativity are in our everyday lives, unbeknownst to the vast majority of us:
      Successful theories are essential to this progress. When you use Google Maps on your smartphone, you draw on a network of satellites orbiting Earth at 20,000 kilometres, of which four are needed for the system to work, and between six and 10 are ‘visible’ from your location at any time. Each of these satellites carries a miniaturised atomic clock, and transmits precise timing and position data to your device that allow you to pioint your location and identify the fastest route to the pub. But without corrections based on Albert Einstein’s special and general theories of relativity, the Global Positioning System would accumulate clock errors, leading to position errors of up to 11 kilometres per day. Without these rather abstract and esoteric – but nevertheless highly successful – theories of physics, after a couple of days you’d have a hard time working out where on Earth you are.
Footnote 1400:
  1. This ‘rant’ was inspired by a first reading of "Botros (Sophie) - Truth, Time and History: A Philosophical Enquiry".
  2. Of course, the book requires closer consideration and its arguments formally refuted.
  3. For now, see my comments on the transcript of the promotional video"Botros (Sophie) - Truth, Time and History - A Philosophical Inquiry with Dr Sophie Botros".
Footnote 1401:
  1. See, for instance, Barry C. Smith’s analogous argument about the philosophy of the Senses and neuroscience in Aeon: Video - Smith - Aristotle was wrong and so are we: there are far more than five senses.
Footnote 1402:
  1. So, if I say “there will be a sea-battle tomorrow”, and that happening is contingent, then this is just a speculation with a greater or lesser probability of truth, though it may subsequently turn out to have been correct or incorrect as the case may be.
Footnote 1518:
  1. See:-
    → "Olson (Eric) - The Human Animal: Introduction", pp. 4-5 and
    → "Olson (Eric) - The Human Animal: Alternatives",
    both in "Olson (Eric) - The Human Animal - Personal Identity Without Psychology".
Footnote 1559:
  1. Like Mozart’s Requiem (Wikipedia: Requiem (Mozart)) or "Wittgenstein (Ludwig) - Philosophical Investigations".
Footnote 1673:
  1. The evidence for this – by way of self-confession – is in "Van Inwagen (Peter) - Materialism and the Psychological-continuity Account of Personal Identity".
Footnote 1703:
  1. See "Frisen (Jonas), Etc. - Retrospective Birth Dating of Cells in Humans" for the argument that cerebral grey-matter retains its carbon atoms from infancy, and hence that neurons are as old as the individual. However, other cells are replaced – sometimes frequently.
Footnote 1861:
  1. This makes it sound as though the CV goes back centuries!
  2. Wasserman uses the term “traditionally” when he probably just means “usually” or “standardly”.
Footnote 1924:
  1. Sadly, she died on 24th December 2017.
  2. I’ve retained the “historic present” in the rest of this discussion.
Footnote 2439:
  1. I have DSM3
    → "American Psychiatric Association - Diagnostic and Statistical Manual of Mental Disorders (DSM-III-R)", and
    → "Spitzer (Robert), Skodol (Andrew), Gibbon (Miriam) & Williams (Janet) - DSM-III Casebook: A Learning Companion to DSM III",
  2. But the latest edition is DSM5 (May 18, 2013).
  3. See Wikipedia: DSM.
Footnotes 2816, 3035:
  1. Consider Wikipedia: Ray Wilkins & Wikipedia: Eric Bristow dying of cardiac arrest “before their time”, plus loads of young blacks (and those mistaken for being young blacks) dying from puncture wounds.
Footnotes 2979, 3198:
  1. When I originally wrote this in February 2016.


Previous Version of this Note:

Date Length Title
01/01/2025 18:15:50 489612 Thesis - Personal Identity


Note last updated Reading List for this Topic Parent Topic
31/10/2025 06:20:48 None available None

Summary of Notes Referenced by This Note

1 Corinthians: 15 Abortion Aeon Papers Androids Animal Rights
Animalism Animalism - Arguments For Animalism - Objections Animalists Animals
Animation Artifacts Awaiting Attention (Personal Identity) Baker Baker - The Human Animal: Big-Tent Metaphysics
Biological Criterion Biological View Bodily Continuity Body Body Criterion
Brain Brain Criterion Brain Death Brain State Transfer Brain Transplants
Brains in Vats Buddhism Bundle Theories Carter – Artifacts of Theseus Cartesian Ego
Causality Cerebrum Change Chimera Christian Materialism
Clinical Observations Clones Closest Continuer Coincidence Commissurotomy
Computers Concepts Connectedness vs Continuity Consciousness Constitution
Constitution View Constitution View - Objections Contingent Identity Continuity Convention
Corpses Counting Persons Criteria of Identity Crypt - Friends Cyborgs
Daniel Dennett – Conditions of Personhood Death Degrees of Personhood Descartes Descartes - Real Distinction
Dicephalus Dion and Theon Disembodied Existence Dracula Dualism
Dud Note Refs Duplication Embryo Endurantism Essentialism
Evolution Exdurantism Existence Explanation Fetuses
Fiction Fine - The Non-Identity of a Material Thing and Its Matter Fine - The Non-Identity of a Material Thing and Its Matter (Essay) First-Person Perspective Fission
Forensic Property Free Will Functionalism Fusion Future Great Pain Test
General Surveys Genetics Holes & Smiles Homo Sapiens Human Animals
Human Beings Human Persons Hume Hybrid Theories Hylomorphism
I Immortality Indeterminate Identity Individual Information
Intelligence Intermittent Objects Internet Technology and Philosophy Interregnum Intuition
Ivan Ilych Jen_070928_N2J1 Jen_071022 (Dennett) Kant Kinds
Kurtz - Persistence (Introduction) Language of Thought Leibniz Lewis Life
Life After Death Locke Locke on Personal Identity Logic of Identity Makropulos Case
Markosian - The Human Animal: Three Problems for Olson Matter Memory Mereology Metamorphosis
Metaphysics Methuselah Mind Modality Multiple Personality Disorder
Narrative Identity Natural Kinds Naturalism Near Death Experiences Nihilism
Non-Human Persons Numerical Identity Occasional Identity Olson Olson - The Human Animal Abstracta Symposium
Only 'X' and 'Y' Principle Ontological Argument Ontology Organisms Origins
Out of Body Experiences Parfit Partial Identity Perdurantism Persistence
Persistence Criteria Persistent Vegetative State Person Personality Personite
Phase Sortals Physical Continuity Physicalism Plants Poverty of Stimulus
Pregnancy Probability Problem of the Many Process Metaphysics Properties
Psychological Continuity Psychological Continuity - Forward Psychological Criterion Psychological View Psychology
Psychopathology Quantum Mechanics Quasi-Memory Race Reductionism
Reduplication Objections Reincarnation Relative Identity Religion Replication
Resurrection Scattered Objects Self Self-Consciousness Semantics
Ship of Theseus Siliconisation Similarity Simple View Sleep
Snowdon - The Self and Personal Identity Society Sorites Sortals Soul Criterion
Souls Statue and the Clay Substance Supervenience Survival
Taking Persons Seriously Teletransportation Temporary Intrinsics Thesis - Chapter 01 (Introduction) Thesis - Chapter 02 (What are We?)
Thesis - Chapter 03 (What is a Person?) Thesis - Chapter 04 (Basic Metaphysical Issues) Thesis - Chapter 05 (Persistence and Time) Thesis - Chapter 06 (Animalism and Arguments for It) Thesis - Chapter 07 (The Constitution View and Arguments for It)
Thesis - Chapter 08 (Arguments against Animalism) Thesis - Chapter 09 (Arguments against the Constitution View) Thesis - Chapter 10 (Thought Experiments) Thesis - Chapter 11 (Resurrection) Thesis - Chapter 12 (Conclusion)
Thesis - Current Stance Thesis - Personal Identity Thesis - Preface Thesis - References Thinking Animal Argument
Thisness (Haecceity) Thought Experiments Tibbles the Cat Time Time Travel
Transhumanism Transplants Twinning Unity of the Person Universals
Uploading Vague Identity Vagueness Wantons What are We?
What Matters Wiggins Wittgenstein Zimmerman - The Human Animal: Objections Zombies
Zygote        

To access information, click on one of the links in the table above.



Summary of Notes Citing This Note

General Surveys PID Note, Book & Paper Usage Psychological Continuity - Forward, 2 Status: Personal Identity (2025 - September), 2, 3 Status: Priority Task List (2025 - October)
Status: Summary (2025 - September), 2, 3 Thesis - Chapter 01 (Introduction), 2, 3 Thesis - Chapter 02 (What are We?) What are We?  

To access information, click on one of the links in the table above.



Authors, Books & Papers Citing this Note

Author Title Medium Extra Links Read?
Jennings (Colin) A linkless internet Paper Medium Quality Abstract   Yes
Todman (Theo) Thesis - Chapter 01 (Introduction) Paper Medium Quality Abstract 2, 3 Yes
Todman (Theo) Thesis - Chapter 02 (What Are We?) Paper Medium Quality Abstract   Yes
Todman (Theo) Thesis - General Surveys Paper Medium Quality Abstract   Yes
Todman (Theo) Thesis - Psychological Continuity - Forward Paper Medium Quality Abstract 2 Yes
Todman (Theo) Thesis - What Are We? Paper Medium Quality Abstract   Yes


References & Reading List

Author Title Medium Source Read?
Agar (Nicholas) Cloning and Identity Paper - Cited Medium Quality Abstract Journal of Medicine and Philosophy, Volume 28, Number 1, February 2003, pp. 9-26(18). 7%
Al-Khalili (Jim) & McFadden (Johnjoe) Life on the Edge: The Coming of Age of Quantum Biology Book - Cited Medium Quality Abstract Al-Khalili (Jim) & McFadden (Johnjoe) - Life on the Edge: The Coming of Age of Quantum Biology Yes
Allen (N.J.) The Category of the Person: a Reading of Mauss’s Last Essay Paper - Cited Carrithers, Collins & Lukes - The Category of the Person, Chapter 2 No
American Psychiatric Association Diagnostic and Statistical Manual of Mental Disorders (DSM-III-R) Book - Cited Medium Quality Abstract American Psychiatric Association - Diagnostic and Statistical Manual of Mental Disorders (DSM-III-R) No
Atkinson (Thomas) Human organisms and the survival of death: a systematic evaluation of the possibility of life after death given animalism Paper - Cited Medium Quality Abstract PhD thesis, University of Liverpool Website, August 2017 Yes
Augustine (Keith) Hallucinatory Near-Death Experiences Paper - Cited Low Quality Abstract Infidels Website 6%
Avramides (Anita) Other Minds Book - Cited Medium Quality Abstract Avramides (Anita) - Other Minds No
Ayers (Michael R.) Locke (Vol 2 - Ontology) Book - Cited (via Paper Cited) Low Quality Abstract Bibliographical details to be supplied 26%
Ayers (Michael R.) Locke's Theory of Personal Identity Paper - Cited High Quality Abstract Ayers - Locke (Vol. 2 - Ontology), 1991, Chapter 23, pp. 260-268 Yes
Bailey (Andrew M.) The Elimination Argument Paper - Cited Medium Quality Abstract Philosophical Studies 168 (2014): 475-482 56%
Baillie (James) Problems in Personal Identity Book - Cited Medium Quality Abstract Baillie (James) - Problems in Personal Identity 45%
Baker (Lynne Rudder) Big-Tent Metaphysics Paper - Cited High Quality Abstract Abstracta Special Issue I – 2008 (Brazil) Yes
Baker (Lynne Rudder) Christians Should Reject Mind-Body Dualism Paper - Cited Medium Quality Abstract Peterson (Michael) & Van Arragon (Raymond) - Contemporary Debates in Philosophy of Religion, 2004 Yes
Baker (Lynne Rudder) Constitution Revisited Paper - Cited Low Quality Abstract Baker (Lynne) - The Metaphysics of Everyday Life: An Essay in Practical Realism, Chapter 8 No
Baker (Lynne Rudder) Materialism with a Human Face Paper - Cited Corcoran - Soul, Body and Survival, Chapter 10 Yes
Baker (Lynne Rudder) Mereology and Constitution Paper - Cited Low Quality Abstract Baker (Lynne) - The Metaphysics of Everyday Life: An Essay in Practical Realism, Chapter 9 7%
Baker (Lynne Rudder) Naturalism and the First-Person Perspective Book - Cited (via Paper Cited) Low Quality Abstract Bibliographical details to be supplied 19%
Baker (Lynne Rudder) Naturalism and the First-Person Perspective: What Is The Problem? Paper - Cited High Quality Abstract Baker (Lynne Rudder) - Naturalism and the First-Person Perspective, Introduction Yes
Baker (Lynne Rudder) Personal Identity: A Not-So-Simple Simple View Paper - Cited Low Quality Abstract Gasser (Georg) & Stefan (Matthias), Eds. - Personal Identity: Complex or Simple? 2012 8%
Baker (Lynne Rudder) Persons and Bodies: A Constitution View Book - Cited Medium Quality Abstract Baker (Lynne Rudder) - Persons and Bodies: A Constitution View Yes
Baker (Lynne Rudder) Precis of 'Persons & Bodies: A Constitution View' Paper - Cited High Quality Abstract Field Guide to the Philosophy of Mind, 2001, e-Symposium on "Persons & Bodies: A Constitution View" Yes
Baker (Lynne Rudder) Saving Belief: A Critique of Physicalism Book - Cited Medium Quality Abstract Baker (Lynne Rudder) - Saving Belief: A Critique of Physicalism 0%
Baker (Lynne Rudder) The Coherence Of the Idea of Material Constitution Paper - Cited Baker (Lynne) - Persons and Bodies, Chapter 7, pp. 167-190 Yes
Baker (Lynne Rudder) The Metaphysics of Everyday Life: An Essay in Practical Realism Book - Cited Low Quality Abstract Baker (Lynne Rudder) - The Metaphysics of Everyday Life: An Essay in Practical Realism 2%
Baker (Lynne Rudder) The Very Idea of Constitution Paper - Cited Baker (Lynne) - Persons and Bodies, Chapter 2, pp. 27-58 Yes
Baker (Lynne Rudder), Etc. E-Symposium on 'Persons & Bodies: A Constitution View' Book - Cited Low Quality Abstract Baker (Lynne Rudder), Etc. - E-Symposium on 'Persons & Bodies: A Constitution View' Yes
Ball (Philip) Beyond Weird: Why Everything You Thought You Knew About Quantum Mechanics is ... Different Book - Cited Medium Quality Abstract Ball (Philip) - Beyond Weird: Why Everything You Thought You Knew About Quantum Mechanics is ... Different Yes
Ball (Philip) How to Grow a Human: Reprogramming Cells and Redesigning Life Book - Cited High Quality Abstract Ball (Philip) - How to Grow a Human: Reprogramming Cells and Redesigning Life Yes
Barrett (Jeffrey A.) A Quantum-Mechanical Argument for Mind-Body Dualism Paper - Cited Low Quality Abstract Erkenntnis Vol. 65, No. 1, Prospects for Dualism: Interdisciplinary Perspectives (2006), pp. 97-115 No
BBC, Burgess (Gary) Why do we know so little about ME? Paper - Cited High Quality Abstract BBC Radio 5 Website/Articles; 2018; Extract taken 03 May 2023 Yes
Bermudez (Jose Luis), Marcel (Anthony) & Eilan (Naomi), Eds. The Body and the Self Book - Cited (via Paper Cited) Medium Quality Abstract Bibliographical details to be supplied 4%
Blackburn (Simon) Has Kant Refuted Parfit? Paper - Cited Medium Quality Abstract Dancy - Reading Parfit, 1997, Chapter 9 78%
Blackburn (Simon) Truth: A Guide for the Perplexed Book - Cited Medium Quality Abstract Blackburn (Simon) - Truth: A Guide for the Perplexed Yes
Blackmore (Susan) Beyond the Body Book - Cited Medium Quality Abstract Blackmore (Susan) - Beyond the Body No
Blatti (Stephan) A New Argument for Animalism Paper - Cited Medium Quality Abstract Analysis Vol 72, Number 4, October 2012, pp. 685–690 33%
Bostrom (Nick) Are You Living in a Computer Simulation? Paper - Cited Medium Quality Abstract Philosophical Quarterly, 2003, Vol. 53, No. 211, pp. 243-255 Yes
Bostrom (Nick) The Simulation Argument: Reply to Weatherson Paper - Cited Medium Quality Abstract Philosophical Quarterly, 2005, Vol. 55, No. 218, pp. 90-97 No
Botros (Sophie) Truth, Time and History - A Philosophical Inquiry with Dr Sophie Botros Paper - Cited High Quality Abstract YouTube Video, 6 Nov 2018, prepared by Bloomsbury Academic Publishing Yes
Botros (Sophie) Truth, Time and History: A Philosophical Enquiry Book - Cited Medium Quality Abstract Botros (Sophie) - Truth, Time and History: A Philosophical Enquiry Yes
Bourget (David) & Chalmers (David) The PhilPapers Surveys: What Do Philosophers Believe? Paper - Cited High Quality Abstract Philosophical Studies: Vol. 170, No. 3 (September 2014), pp. 465-500 Yes
Bradley (Ben), Feldman (Fred) & Johansson (Jens) The Oxford Handbook of Philosophy of Death Book - Cited (via Paper Cited) Low Quality Abstract Bibliographical details to be supplied 7%
Brandom (Robert) Making It Explicit: Reasoning, Representing & Discursive Commitment Book - Cited Medium Quality Abstract Brandom (Robert) - Making It Explicit: Reasoning, Representing & Discursive Commitment 3%
Brandom (Robert) Toward a Normative Pragmatics Paper - Cited High Quality Abstract Brandom (Robert) - Making It Explicit: Reasoning, Representing & Discursive Commitment, 1994, Chapter 1 50%
Brennan (Andrew) Survival Paper - Cited Medium Quality Abstract Synthese June 1984; 59: 339-362 5%
Burke (Michael) Dion and Theon: An Essentialist Solution to an Ancient Puzzle Paper - Cited Medium Quality Abstract Journal of Philosophy 91, No. 3 (March 1994), 129-139 Yes
Button (Tim) Wittgenstein on Solipsism in the 1930s: Private Pains, Private Languages, and Two Uses of ‘I’ Paper - Cited Medium Quality Abstract Royal Institute of Philosophy Supplements, Volume 82 (Metaphysics) - July 2018, pp. 205-229 5%
Bynum (Caroline) Metamorphosis and Identity Book - Cited Low Quality Abstract Bynum (Caroline) - Metamorphosis and Identity 0%
Bynum (Caroline) Resurrection of the Body in Western Christianity, 200 - 1336 Book - Cited Medium Quality Abstract Bynum (Caroline) - Resurrection of the Body in Western Christianity, 200 - 1336 4%
Calarco (Matthew) Thinking Through Animals: Identity, Difference, Indistinction Book - Cited Medium Quality Abstract Calarco (Matthew) - Thinking Through Animals: Identity, Difference, Indistinction Yes
Carrithers (Michael), Collins (Steven) & Lukes (Steven) The Category of the Person: Anthropology, philosophy, history Book - Cited (via Paper Cited) Low Quality Abstract Bibliographical details to be supplied No
Carter (William) Artifacts of Theseus: Fact and Fission Paper - Cited Medium Quality Abstract Australasian Journal of Philosophy, 61.3 (September 1983) Yes
Cassam (Quassim) Parfit on Persons Paper - Cited Low Quality Abstract Proceedings of the Aristotelian Society 93: 17-37, 1992 Yes
Cavalieri (Paola) & Singer (Peter), Eds. The Great Ape Project - Equality Beyond Humanity Book - Cited Medium Quality Abstract Cavalieri (Paola) & Singer (Peter), Eds. - The Great Ape Project - Equality Beyond Humanity Yes
Chalmers (David) How Cartesian Dualism Might Have Been True Paper - Cited High Quality Abstract Website Yes
Chalmers (David) Naturalistic Dualism Paper - Cited Low Quality Abstract Chalmers - The Conscious Mind, 1996, Chapter 4 No
Chalmers (David) The Conscious Mind: In Search of a Fundamental Theory Book - Cited (via Paper Cited) Low Quality Abstract Bibliographical details to be supplied 0%
Chalmers (David) The Matrix as Metaphysics Paper - Cited Medium Quality Abstract Grau - Philosophers Explore "The Matrix", 2005 Yes
Chisholm (Roderick) Which Physical Thing Am I? An Excerpt from 'Is There a Mind-Body Problem?' Paper - Cited High Quality Abstract Van Inwagen & Zimmerman - Metaphysics: The Big Questions, 1998 Yes
Clark (Andy) & Kuhn (Robert Lawrence) Aeon: Video - Andy Clark - Virtual immortality Paper - Cited High Quality Abstract Aeon, 19 August, 2019 Yes
Cockburn (David), Ed. Human Beings Book - Cited (via Paper Cited) Low Quality Abstract Bibliographical details to be supplied 7%
Cohen (S. Mark) & Reeve (C.D.C.) Aristotle’s Metaphysics Paper - Cited Medium Quality Abstract Stanford Encyclopaedia of Philosophy, 2000-2020 6%
Coliva (Annalisa) Review of Gasser & Stefan, Eds. - Personal Identity: Complex or Simple? Paper - Cited High Quality Abstract Notre Dame Philosophical Reviews Yes
Collins (Steven) Categories, Concepts or Predicaments? Remarks on Mauss’s use of Philosophical Terminology Paper - Cited Carrithers, Collins & Lukes - The Category of the Person, Chapter 3 No
Corcoran (Kevin), Ed. Soul, Body and Survival: Essays on the Metaphysics of Human Persons Book - Cited (via Paper Cited) Medium Quality Abstract Bibliographical details to be supplied 99%
Dancy (Jonathan), Ed. Reading Parfit Book - Cited (via Paper Cited) Medium Quality Abstract Bibliographical details to be supplied 17%
Dawkins (Richard) The Blind Watchmaker Book - Cited Medium Quality Abstract Dawkins (Richard) - The Blind Watchmaker Yes
DeGrazia (David) Human Identity and Bioethics Book - Cited Medium Quality Abstract DeGrazia (David) - Human Identity and Bioethics 7%
Dennett (Daniel) Brainstorms - Philosophical Essays on Mind and Psychology Book - Cited (via Paper Cited) Low Quality Abstract Bibliographical details to be supplied 43%
Dennett (Daniel) Conditions of Personhood Paper - Cited High Quality Abstract Dennett - Brainstorms - Philosophical Essays on Mind and Psychology, Chapter 14, 1976 Yes
Dennett (Daniel) Elbow Room - The Varieties of Free Will Worth Wanting Book - Cited Medium Quality Abstract Dennett (Daniel) - Elbow Room - The Varieties of Free Will Worth Wanting 2%
Dennett (Daniel) Freedom Evolves Book - Cited Low Quality Abstract Dennett (Daniel) - Freedom Evolves 3%
Dennett (Daniel) The Mind's I - Fantasies and Reflections on Self and Soul: Introduction Paper - Cited High Quality Abstract Hofstadter & Dennett - The Mind's I - Fantasies and Reflections on Self and Soul Yes
Dennett (Daniel) Where Am I? Paper - Cited High Quality Abstract Dennett - Brainstorms - Philosophical Essays on Mind and Psychology, Chapter 17, 1978 Yes
Dennett (Daniel) & Caruso (Gregg D.) Just deserts Paper - Cited Low Quality Abstract Aeon, 04 October, 2018 Yes
DePaul (Michael) & Ramsey (William) Rethinking Intuition: The Psychology of Intuition and Its Role in Philosophical Inquiry Book - Cited DePaul (Michael) & Ramsey (William) - Rethinking Intuition: The Psychology of Intuition and Its Role in Philosophical Inquiry 0%
Desmond (Adrian) The Ape's Reflexion Book - Cited Medium Quality Abstract Desmond (Adrian) - The Ape's Reflexion 3%
Diamond (Jared) The Rise and Fall of the Third Chimpanzee: How Our Animal Heritage Affects the Way We Live Book - Cited Medium Quality Abstract Diamond (Jared) - The Rise and Fall of the Third Chimpanzee: How Our Animal Heritage Affects the Way We Live 1%
Diogenes Laertius, Galen & Cicero On the Sorites Paper - Cited Keefe - Vagueness: A Reader No
Edwards (Paul) Reincarnation: A Critical Examination Book - Cited Medium Quality Abstract Edwards (Paul) - Reincarnation: A Critical Examination Yes
Ehrsson (H. Henrik) The Experimental Induction of Out-of-Body Experiences Paper - Cited Low Quality Abstract Science  24 Aug 2007: Vol. 317, Issue 5841, pp. 1048 No
Ellis (Brian) Australasian Journal of Philosophy - 61.3 (September 1983) Book - Cited (via Paper Cited) Bibliographical details to be supplied 83%
Epstein (Robert) The empty brain Paper - Cited Medium Quality Abstract Aeon, 18 May, 2016 Yes
Feldman (Fred) Confrontations with the Reaper: A Philosophical Study of the Nature and Value of Death Book - Cited (via Paper Cited) Medium Quality Abstract Bibliographical details to be supplied Yes
Feldman (Fred) The Survival of Death Paper - Cited High Quality Abstract Feldman - Confrontations with the Reaper, Chapter 6 Yes
Fenwick (Peter) & Fenwick (Elizabeth) The Truth in the Light: An Investigation of Over 300 Near-Death Experiences Book - Cited High Quality Abstract Fenwick (Peter) & Fenwick (Elizabeth) - The Truth in the Light: An Investigation of Over 300 Near-Death Experiences Yes
Ferner (Adam) Metaphysics and biology: a critique of David Wiggins’ account of personal identity Paper - Cited High Quality Abstract PhD Thesis, Birkbeck, 2014 98%
Fine (Kit) The Non-Identity of a Material Thing and Its Matter Paper - Cited Medium Quality Abstract Mind - 112/446 (April 2003) Yes
Finn (Suki) Bun or bump? Paper - Cited Low Quality Abstract Aeon, 27 July, 2017 Yes
Fodor (Jerry) The Modularity of Mind: An Essay on Faculty Psychology Book - Cited Low Quality Abstract Fodor (Jerry) - The Modularity of Mind: An Essay on Faculty Psychology Yes
Frankfurt (Harry) Freedom of the Will and the Concept of a Person Paper - Cited High Quality Abstract Rosenthal - The Nature of Mind Yes
French (Peter), Uehling (Theodore) & Wettstein (Howard) Midwest Studies in Philosophy (Vol IV, 1979) - Metaphysics Book - Cited (via Paper Cited) Bibliographical details to be supplied 1%
Fricker (Miranda) & Hornsby (Jennifer), Eds. The Cambridge Companion to Feminism in Philosophy Book - Cited (via Paper Cited) Medium Quality Abstract Bibliographical details to be supplied 2%
Frisen (Jonas), Etc. Retrospective Birth Dating of Cells in Humans Paper - Cited Medium Quality Abstract Cell, Vol. 122, 133–143, July 15, 2005 Yes
Frith (Christopher D.) & Frith (Uta) Mechanisms of Social Cognition Paper - Cited Medium Quality Abstract Annual Review of Psychology, Vol. 63:287-313 (January 2012) 8%
Gale (Richard) On Some Pernicious Thought-Experiments Paper - Cited High Quality Abstract Thought Experiments in Science and Philosophy, Ed. Tamara Horowitz & Gerald J. Massey, 1991 Yes
Gallois (Andre) Occasions of Identity : a Study in the Metaphysics of Persistence, Change, and Sameness Book - Cited (via Paper Cited) Low Quality Abstract Bibliographical details to be supplied No
Gallois (Andre) The Puzzle Cases Paper - Cited Low Quality Abstract Gallois - Occasions of Identity, 1998, Chapter 1 No
Garrett (Brian) Animalism and Reductionism Paper - Cited Medium Quality Abstract Garrett - Personal Identity and Self-consciousness, 1998, Chapter 2 Yes
Garrett (Brian) Personal Identity and Reductionism Paper - Cited Medium Quality Abstract Philosophy and Phenomenological Research 51, No. 2, Jun., 1991, pp. 361-373 Yes
Garrett (Brian) Personal Identity and Self-consciousness Book - Cited (via Paper Cited) Medium Quality Abstract Bibliographical details to be supplied Yes
Gasser (Georg) & Stefan (Matthias) Personal Identity: Complex or Simple? Introduction Paper - Cited Medium Quality Abstract Gasser (Georg) & Stefan (Matthias), Eds. - Personal Identity: Complex or Simple? 2012 33%
Gasser (Georg) & Stefan (Matthias), Eds. Personal Identity: Complex or Simple? Book - Cited Low Quality Abstract Gasser (Georg) & Stefan (Matthias), Eds. - Personal Identity: Complex or Simple? 4%
Gasser (Georg), Ed. Personal Identity and Resurrection: How Do We Survive Our Death? Book - Cited Medium Quality Abstract Gasser (Georg), Ed. - Personal Identity and Resurrection: How Do We Survive Our Death? 96%
Gibbard (Allan) Contingent Identity Paper - Cited High Quality Abstract Rea - Material Constitution - A Reader Yes
Gillett (Carl) What you are and the evolution of organs, souls and superorganisms: a reply to Blatti Paper - Cited Medium Quality Abstract Analysis , Vol. 73, No. 2 (April 2013), pp. 271-279 22%
Glover (Jonathan) I: Philosophy and Psychology of Personal Identity Book - Cited Medium Quality Abstract Glover (Jonathan) - I: Philosophy and Psychology of Personal Identity 6%
Grau (Christopher) Philosophers Explore 'The Matrix' Book - Cited (via Paper Cited) Medium Quality Abstract Bibliographical details to be supplied 8%
Green (Joel B.) Body, Soul, and Human Life: The Nature of Humanity in the Bible Book - Cited Medium Quality Abstract Green (Joel B.) - Body, Soul, and Human Life: The Nature of Humanity in the Bible 2%
Haggard (Patrick) Human volition: towards a neuroscience of will Paper - Cited Medium Quality Abstract Nature Reviews; Neuroscience Volume 9; December 2008; 945 No
Hains (Brigid) & Hains (Paul) Aeon: C-F Book - Cited (via Paper Cited) Low Quality Abstract Bibliographical details to be supplied 51%
Hains (Brigid) & Hains (Paul) Aeon: Follow-up Boxes Book - Cited (via Paper Cited) Low Quality Abstract Bibliographical details to be supplied 100%
Hains (Brigid) & Hains (Paul) Aeon: G-K Book - Cited (via Paper Cited) Low Quality Abstract Bibliographical details to be supplied 31%
Hains (Brigid) & Hains (Paul) Aeon: L-P Book - Cited (via Paper Cited) Low Quality Abstract Bibliographical details to be supplied 33%
Hains (Brigid) & Hains (Paul) Aeon: Q-S Book - Cited (via Paper Cited) Low Quality Abstract Bibliographical details to be supplied 29%
Han (Byung-Chul) Shanzhai: Deconstruction in Chinese Book - Cited Medium Quality Abstract Han (Byung-Chul) - Shanzhai: Deconstruction in Chinese Yes
Harari (Yuval Noah) Sapiens: A Brief History of Humankind Book - Cited Medium Quality Abstract Harari (Yuval Noah) - Sapiens: A Brief History of Humankind Yes
Hasker (William) The Emergent Self Book - Cited Medium Quality Abstract Hasker (William) - The Emergent Self 1%
Haslanger (Sally) Endurance and Temporary Intrinsics Paper - Cited Low Quality Abstract Analysis 49, 1989, pp. 119-125 33%
Haslanger (Sally) Humean Supervenience and Enduring Things Paper - Cited Medium Quality Abstract Australasian Journal of Philosophy, 72:3; 339-359. 1994. No
Haslanger (Sally) Persistence Through Time Paper - Cited Medium Quality Abstract M. J. Loux and D.W. Zimmerman, eds., The Oxford Handbook of Metaphysics (OUP, 2003) 6%
Haslanger (Sally) Persistence, Change, and Explanation Paper - Cited Medium Quality Abstract Haslanger (Sally) & Kurtz (Roxanne) - Persistence : Contemporary Readings No
Haslanger (Sally) & Kurtz (Roxanne), Eds. Persistence : Contemporary Readings Book - Cited Medium Quality Abstract Haslanger (Sally) & Kurtz (Roxanne), Eds. - Persistence : Contemporary Readings 30%
Hawley (Katherine) & Bird (Alexander) What are Natural Kinds? Paper - Cited Medium Quality Abstract St. Andrews' Website; Philosophical Perspectives 25.1 (2011), 205-221. 17%
Hecker (Bruce) How do Whales and Dolphins Sleep Without Drowning? Paper - Cited High Quality Abstract Scientific American, 2nd February 1998 Yes
Hershenov (David) Van Inwagen, Zimmerman, and the Materialist Conception of Resurrection Paper - Cited Low Quality Abstract Religious Studies, 38 pp. 1-19 (December 2002) 11%
Heyes (Cecilia M.) Cognitive Gadgets: The Cultural Evolution of Thinking Book - Cited Medium Quality Abstract Heyes (Cecilia M.) - Cognitive Gadgets: The Cultural Evolution of Thinking Yes
Hinchliff (Mark) The Puzzle of Change Paper - Cited Medium Quality Abstract Haslanger (Sally) & Kurtz (Roxanne) - Persistence : Contemporary Readings 13%
Hodson (Sommer) A Hybrid View of Personal Identity Paper - Cited Medium Quality Abstract PhD Thesis, University of Rochester, Rochester, New York, 2013 Yes
Hofstadter (Douglas) & Dennett (Daniel), Eds. The Mind's I - Fantasies and Reflections on Self and Soul Book - Cited (via Paper Cited) Medium Quality Abstract Bibliographical details to be supplied 14%
Horowitz (Tamara) & Massey (Gerald J.) Thought Experiments in Science and Philosophy Book - Cited (via Paper Cited) Low Quality Abstract Bibliographical details to be supplied 3%
Hudson (Hud) I am Not an Animal! Paper - Cited Medium Quality Abstract Van Inwagen (Peter) & Zimmerman (Dean) - Persons: Human and Divine 11%
Ishiguro (Kazuo) Never Let Me Go Book - Cited Low Quality Abstract Ishiguro (Kazuo) - Never Let Me Go Yes
Jaarsma (Ada) Choose your own birth Paper - Cited Medium Quality Abstract Aeon, 10 March 2020 Yes
James (Susan) Feminism in Philosophy of Mind: The Question of Personal Identity Paper - Cited Medium Quality Abstract Fricker & Hornsby - The Cambridge Companion to Feminism in Philosophy, 2000 Yes
Jarrett (Christian) Ketamine trips are uncannily like near-death experiences Paper - Cited High Quality Abstract Aeon, 20 June, 2019 Yes
JCS Journal of Consciousness Studies, Volume 14, Issue 05-06 (2007) Book - Cited (via Paper Cited) Medium Quality Abstract Bibliographical details to be supplied No
Jennings (Colin) A linkless internet Paper - Referencing Medium Quality Abstract Aeon, 06 December 2024 Yes
Johansson (Jens) What is Animalism? Paper - Cited Medium Quality Abstract Ratio, Volume 20, Issue 2, June 2007, pp. 194–205 Yes
Johnston (Mark) Human Beings Paper - Cited High Quality Abstract Journal of Philosophy, Volume 84, Issue 2 (Feb 1987), 59-83 Yes
Johnston (Mark) 'Human Beings' Revisited: My Body is Not an Animal Paper - Cited Medium Quality Abstract Zimmerman (Dean), Ed. - Oxford Studies in Metaphysics: Volume 3 78%
Johnston (Mark) Personites, Maximality and Ontological Trash Paper - Cited Medium Quality Abstract Philosophical Perspectives, 30, 2016, 198–228 15%
Johnston (Mark) Reasons and Reductionism Paper - Cited Medium Quality Abstract Philosophical Review, July 1992; 101(3): 589-618 8%
Johnston (Mark) Surviving Death Book - Cited Medium Quality Abstract Johnston (Mark) - Surviving Death 13%
Johnston (Mark) The Personite Problem: Should Practical Reason Be Tabled? Paper - Cited Medium Quality Abstract Nous 51:3, 2017, pp. 617-644 12%
Kagan (Shelly) Death Book - Cited (via Paper Cited) Medium Quality Abstract Bibliographical details to be supplied Yes
Kagan (Shelly) The nature of death (continued); Believing you will die Paper - Cited Low Quality Abstract Open Yale Courses, 2007 Yes
Kaufman (Sharon) Neither person nor cadaver Paper - Cited Low Quality Abstract Aeon, 06 February, 2020 Yes
Keefe (Rosanna) & Smith (Peter) Vagueness: A Reader Book - Cited (via Paper Cited) Bibliographical details to be supplied 13%
Keles (Serap) Personal identity and persistence over time : the hybrid view with regard to hylomorphism Paper - Cited Medium Quality Abstract PhD Thesis, London Metropolitan University, February 2020 1%
Kingma (Elselijn) BUMP: Better Understanding the Metaphysics of Pregnancy (B1) Paper - Cited High Quality Abstract Southampton University Website Yes
Kingma (Elselijn) Were You Part of Your Mother? Paper - Cited High Quality Abstract Mind, Volume 128, Issue 511, July 2019, Pages 609–646 Yes
Kinsbourne (Marcel) Asymmetrical Function of the Brain Book - Cited Medium Quality Abstract Kinsbourne (Marcel) - Asymmetrical Function of the Brain No
Kohn (Marek) The Neanderthal mind Paper - Cited Medium Quality Abstract Aeon, 15 May 2013 Yes
Kolak (Daniel) & Martin (Raymond), Eds. Self and Identity: Contemporary Philosophical Issues Book - Cited Medium Quality Abstract Kolak (Daniel) & Martin (Raymond), Eds. - Self and Identity: Contemporary Philosophical Issues No
Kotak (Aakash) The Hybrid Theory of Personal Identity Paper - Cited Medium Quality Abstract Retrieved from Academia.edu 73%
Kripke (Saul) Naming and Necessity Book - Cited High Quality Abstract Kripke (Saul) - Naming and Necessity Yes
Kripke (Saul) Naming and Necessity: Lecture III Paper - Cited High Quality Abstract Kripke - Naming and Necessity, 1980, Chapter 3 Yes
Kurtz (Roxanne) Introduction to Persistence: What’s the Problem? Paper - Cited High Quality Abstract Haslanger (Sally) & Kurtz (Roxanne) - Persistence : Contemporary Readings Yes
Leibniz (Gottfried) What Identity Or Diversity Is Paper - Cited Medium Quality Abstract Leibniz, Remnant, Bennett - New Essays on Human Understanding, Chapter 27 25%
Leibniz (Gottfried), Remnant (Peter), Bennett (Jonathan) New Essays on Human Understanding Book - Cited Medium Quality Abstract Leibniz (Gottfried), Remnant (Peter), Bennett (Jonathan) - New Essays on Human Understanding 2%
Lewis (C.S.) Mere Christianity Book - Cited Medium Quality Abstract Lewis (C.S.) - Mere Christianity 3%
Lewis (David) Papers in Metaphysics and Epistemology Book - Cited (via Paper Cited) Medium Quality Abstract Bibliographical details to be supplied 5%
Lewis (David) Philosophical Papers Volume I Book - Cited (via Paper Cited) Low Quality Abstract Bibliographical details to be supplied Yes
Lewis (David) Rearrangement of Particles: Reply to Lowe Paper - Cited High Quality Abstract Analysis 48, 1988, pp. 65-72 11%
Lewis (David) Survival and Identity Paper - Cited Medium Quality Abstract Lewis - Philosophical Papers Volume I, Part 1: Ontology, Chapter 5 Yes
Lloyd (Peter) A Review of David Chalmers' essay 'The Matrix as Metaphysics' Paper - Cited Low Quality Abstract Discusiones Filosóficas 9 (12):175 - 192 (2008) No
Locke (John) Of Identity and Diversity Paper - Cited Locke - Essay, Book 2, Chapter 27 Yes
Locke (John), A.M. Locke on the Human Understanding Book - Cited (via Paper Cited) Bibliographical details to be supplied 8%
Lovibond (Sabina) & Williams (S.G.) Identity, Truth & Value: Essays for David Wiggins Book - Cited High Quality Abstract Lovibond (Sabina) & Williams (S.G.) - Identity, Truth & Value: Essays for David Wiggins 10%
Lowe (E.J.) Non-Cartesian Substance Dualism and the Problem of Mental Causation Paper - Cited Medium Quality Abstract Erkenntnis Vol. 65, No. 1, Prospects for Dualism: Interdisciplinary Perspectives (2006), pp. 5-23 No
Lowe (E.J.) Subjects of Experience Book - Cited Medium Quality Abstract Lowe (E.J.) - Subjects of Experience 3%
MacDonald (Graham) Perception & Identity - Essays Presented to A J Ayer with His Replies Book - Cited (via Paper Cited) Medium Quality Abstract Bibliographical details to be supplied 1%
Madden (Rory) Human Persistence Paper - Cited Medium Quality Abstract Philosophers’ Imprint, Vol. 16, No. 17, September 2016 Yes
Madell (Geoffrey) The Identity of the Self Book - Cited Medium Quality Abstract Madell (Geoffrey) - The Identity of the Self No
Markosian (Ned) A Defense of Presentism Paper - Cited Medium Quality Abstract Haslanger (Sally) & Kurtz (Roxanne) - Persistence : Contemporary Readings 7%
Markosian (Ned) Three Problems for Olson's Account of Personal Identity Paper - Cited High Quality Abstract Abstracta Special Issue I – 2008 (Brazil) Yes
Marshall (Richard) Philosophy at 3:AM: Questions and Answers with 25 Top Philosophers Book - Cited (via Paper Cited) Medium Quality Abstract Bibliographical details to be supplied 37%
Marshall (Richard) & Olson (Eric) Eric T. Olson: The Philosopher with No Hands Paper - Cited High Quality Abstract Marshall (Richard) - Philosophy at 3:AM: Questions and Answers with 25 Top Philosophers Yes
Martin (L. Michael) & Augustine (Keith) The Myth of an Afterlife: The Case against Life After Death Book - Cited Medium Quality Abstract Martin (L. Michael) & Augustine (Keith) - The Myth of an Afterlife: The Case against Life After Death 15%
Martin (Michael G.F.), Ed. Mind - 112/446 (April 2003) Book - Cited (via Paper Cited) Bibliographical details to be supplied 50%
Mauss (Marcel) A Category of the Human Mind: the Notion of Person; the Notion of Self Paper - Cited Carrithers, Collins & Lukes - The Category of the Person, Chapter 1 No
McLaughlin (Brian) & Bennett (Karen) Supervenience Paper - Cited Medium Quality Abstract Stanford Encyclopaedia of Philosophy, 2005-18 7%
Mellor (D.H.) Selections from 'Real Time' Paper - Cited Low Quality Abstract Haslanger (Sally) & Kurtz (Roxanne) - Persistence : Contemporary Readings No
Merricks (Trenton) Considerations in Favour of Eliminating Us? Paper - Cited High Quality Abstract Merricks - Objects and Persons, 2001, Chapter 5 6%
Merricks (Trenton) No Statues Paper - Cited Medium Quality Abstract Australasian Journal of Philosophy, 78 (2000): 47-52. 33%
Merricks (Trenton) Objects and Persons Book - Cited Medium Quality Abstract Merricks (Trenton) - Objects and Persons 7%
Merricks (Trenton) Surviving Eliminativism Paper - Cited High Quality Abstract Merricks - Objects and Persons, 2001, Chapter 4 4%
Merricks (Trenton) There Are No Criteria For Identity Over Time Paper - Cited Low Quality Abstract Noûs, Vol. 32, No. 1 (Mar., 1998), pp. 106-124 No
Miller (Kenneth D.) Will You Ever Be Able to Upload Your Brain? Paper - Cited Medium Quality Abstract NY Times, 11th October 2015 Yes
Miller (Kristie) Travelling in Time: How to Wholly Exist in Two Places at the Same Time Paper - Cited Medium Quality Abstract Canadian Journal of Philosophy, Vol. 36, No. 3 (Sep., 2006), pp. 309-334 29%
Moody (Raymond A.) Life After Life Book - Cited Low Quality Abstract Moody (Raymond A.) - Life After Life 4%
Moody (Raymond A.) The Light Beyond Book - Cited Medium Quality Abstract Moody (Raymond A.) - The Light Beyond 3%
More (Max) & Vita-More (Natasha) The Transhumanist Reader Book - Cited Low Quality Abstract More (Max) & Vita-More (Natasha) - The Transhumanist Reader 6%
Morell (Virginia) What do mirror tests test? Paper - Cited Medium Quality Abstract Aeon, 23 October, 2019 Yes
Munitz (Milton) Identity and Individuation Book - Cited Low Quality Abstract Munitz (Milton) - Identity and Individuation No
NHS Brain Death Paper - Cited Medium Quality Abstract NHS Website, taken 28th February 2023 No
Noonan (Harold) Absolute and Relative Identity Paper - Cited Medium Quality Abstract Lovibond & Williams - Identity, Truth & Value: Essays for David Wiggins 17%
Noonan (Harold), Ed. Identity Book - Cited Low Quality Abstract Noonan (Harold), Ed. - Identity 1%
Nozick (Robert) Personal Identity Through Time Paper - Cited Low Quality Abstract Nozick - Philosophical Explanations - Metaphysics; The Identity of the Self; Chapter 1.I No
Nozick (Robert) Philosophical Explanations Book - Cited (via Paper Cited) Medium Quality Abstract Bibliographical details to be supplied 2%
Nozick (Robert) The Identity of the Self: Introduction Paper - Cited High Quality Abstract Nozick - Philosophical Explanations - Metaphysics; Chapter 1 Yes
O'Connell (Mark) To be a Machine Book - Cited Medium Quality Abstract O'Connell (Mark) - To be a Machine Yes
O'Hear (Anthony), Ed. Metaphysics Book - Cited (via Paper Cited) Medium Quality Abstract Bibliographical details to be supplied 8%
Olson (Eric) Composition and Coincidence Paper - Cited Medium Quality Abstract Pacific Philosophical Quarterly, 77 (1996), pp. 374-403 No
Olson (Eric) Human Atoms Paper - Cited Medium Quality Abstract Australasian Journal of Philosophy, 76, No 3, pp. 396-406; September 1998 33%
Olson (Eric) Immanent Causation and Life After Death Paper - Cited High Quality Abstract Gasser (Georg) - Personal Identity and Resurrection: How Do We Survive Our Death? 2010 Yes
Olson (Eric) In Search of the Simple View Paper - Cited Low Quality Abstract Gasser (Georg) & Stefan (Matthias), Eds. - Personal Identity: Complex or Simple? 2012 No
Olson (Eric) Life After Death and the Devastation of the Grave Paper - Cited High Quality Abstract Martin & Augustine - The Myth of an Afterlife, Part 2, Chapter 19, 2015: 409-423 Yes
Olson (Eric) Papers on Identity Boxes: Vol 13 (Olson) Book - Cited (via Paper Cited) Low Quality Abstract Bibliographical details to be supplied 16%
Olson (Eric) Personal Identity - Oxford Bibliographies Online Paper - Cited Oxford Bibliographies Online / Sheffield University website Yes
Olson (Eric) Psychology and Personal Identity Paper - Cited High Quality Abstract The Human Animal, September 1999, Chapter 1, pp. 7-21 Yes
Olson (Eric) The Human Animal - Personal Identity Without Psychology Book - Cited Low Quality Abstract Olson (Eric) - The Human Animal - Personal Identity Without Psychology Yes
Olson (Eric) The Human Animal: Alternatives Paper - Cited Low Quality Abstract The Human Animal, September 1999, Chapter 7, pp. 154-169 Yes
Olson (Eric) The Human Animal: Introduction Paper - Cited High Quality Abstract The Human Animal, September 1999, Introduction, pp. 3-7 Yes
Olson (Eric) What Are We? Paper - Cited High Quality Abstract Journal of Consciousness Studies, Volume 14, Issue 05-06 (2007), pp. 37-55 (19) Yes
Olson (Eric) What are We? A Study of Personal Ontology Book - Cited High Quality Abstract Olson (Eric) - What are We? A Study of Personal Ontology Yes
Olson (Eric) What Are We? Bundles Paper - Cited High Quality Abstract What Are We? A Study in Personal Ontology, Chapter 6 (November 2007: Oxford University Press.) Yes
Olson (Eric) What Are We? Nihilism Paper - Cited High Quality Abstract What Are We? A Study in Personal Ontology, Chapter 8 (November 2007: Oxford University Press.) Yes
Olson (Eric) What Does Functionalism Tell Us About Personal Identity Paper - Cited Medium Quality Abstract Nous, Dec2002, Vol. 36 Issue 4, p682-698, 17p; 13%
Olson (Eric) Why I Have No Hands Paper - Cited Low Quality Abstract Theoria 61 (1995): 182-197 Yes
Olson (Eric), Etc. Abstracta Special Issue on 'The Human Animal' Book - Cited High Quality Abstract Olson (Eric), Etc. - Abstracta Special Issue on 'The Human Animal' Yes
Papineau (David) The Importance of Philosophical Intuition Paper - Cited High Quality Abstract Backdoor Broadcasting Company; Metaphilosophical Directions for the 21st Century - 11 December 2009 Yes
Parfit (Derek) How We Are Not What We Believe Paper - Cited Low Quality Abstract Parfit - Reasons and Persons, January 1986, pp. 219-245(27). Yes
Parfit (Derek) Reasons and Persons Book - Cited Low Quality Abstract Parfit (Derek) - Reasons and Persons Yes
Parfit (Derek) What We Believe Ourselves To Be Paper - Cited Medium Quality Abstract Parfit - Reasons and Persons, January 1986, pp. 199-219(21). Yes
Parsons (Josh) Dion, Theon, and DAUP Paper - Cited Low Quality Abstract Pacific Philosophical Quarterly, 85 (2004) Yes
Parsons (Terence) Indeterminate Identity Book - Cited Low Quality Abstract Parsons (Terence) - Indeterminate Identity 6%
Paul (Ellen), Miller (Fred) & Paul (Jeffrey), Eds. Personal Identity Book - Cited Low Quality Abstract Paul (Ellen), Miller (Fred) & Paul (Jeffrey), Eds. - Personal Identity 0%
Peacocke (Arthur) & Gillett (Grant) Persons and Personality: A Contemporary Inquiry Book - Cited (via Paper Cited) Medium Quality Abstract Bibliographical details to be supplied 14%
Perrett (Roy W.) Death and Immortality Book - Cited (via Paper Cited) Low Quality Abstract Bibliographical details to be supplied 3%
Perrett (Roy W.) Rebirth Paper - Cited Medium Quality Abstract Perrett - Death and Immortality - 1987, Chapter 8 17%
Perry (John), Ed. Personal Identity Book - Cited Medium Quality Abstract Perry (John), Ed. - Personal Identity Yes
Peterson (Michael) & VanArragon (Raymond) Contemporary Debates in Philosophy of Religion Book - Cited (via Paper Cited) High Quality Abstract Bibliographical details to be supplied 13%
Pinto (Yair) When you split the brain, do you split the person? Paper - Cited Aeon, 26 September, 2017 Yes
Polger (Thomas) Functionalism Paper - Cited Low Quality Abstract The Internet Encyclopedia of Philosophy, June 2008 17%
Preyer (Gerhard) & Siebelt (Frank) Reality and Humean Supervenience: Essays on the Philosophy of David Lewis Book - Cited Low Quality Abstract Preyer (Gerhard) & Siebelt (Frank) - Reality and Humean Supervenience: Essays on the Philosophy of David Lewis No
Quinn (Philip L.) Review of Antony Flew's 'The Logic of Mortality' Paper - Cited High Quality Abstract Nous, Vol. 26, No. 1, Mar., 1992, pp. 102-104 Yes
Quitterer (Josef) Hylomorphism and the Constitution View Paper - Cited Medium Quality Abstract Gasser (Georg) - Personal Identity and Resurrection: How Do We Survive Our Death? 2010 50%
Rachels (James) Created From Animals: The Moral Implications of Darwinism Book - Cited Medium Quality Abstract Rachels (James) - Created From Animals: The Moral Implications of Darwinism Yes
Rachels (James) Morality without the Idea that Humans are Special Paper - Cited Rachels - Created From Animals: The Moral Implications of Darwinism, Chapter 5 Yes
Rea (Michael), Ed. Material Constitution - A Reader Book - Cited (via Paper Cited) High Quality Abstract Bibliographical details to be supplied 41%
Rescorla (Michael) The Language of Thought Hypothesis Paper - Cited Medium Quality Abstract Stanford Encyclopaedia of Philosophy, Tue May 28, 2019 7%
Ricard (Matthieu) A Plea for the Animals: The Moral, Philosophical, and Evolutionary Imperative to Treat All Beings with Compassion Book - Cited Medium Quality Abstract Ricard (Matthieu) - A Plea for the Animals: The Moral, Philosophical, and Evolutionary Imperative to Treat All Beings with Compassion 2%
Robinson (Howard) Dualism (Blackwell) Paper - Cited High Quality Abstract Stich & Warfield - Blackwell Guide to the Philosophy of Mind, 2003 No
Robinson (Howard) Dualism (Stanford) Paper - Cited Medium Quality Abstract Stanford Encyclopaedia of Philosophy, 2003-11 Yes
Rorty (Amélie Oksenberg) Mind in Action - Essays in the Philosophy of Mind Book - Cited (via Paper Cited) Medium Quality Abstract Bibliographical details to be supplied 2%
Rorty (Amélie Oksenberg) Persons and Personae Paper - Cited Medium Quality Abstract Rorty (Amelie) - Mind in Action - Essays in the Philosophy of Mind 11%
Rosen (Victoria) One Brain. Two Minds? Many Questions Paper - Cited Low Quality Abstract Journal of Undergraduate Neuroscience Education, 2018 Spring; 16(2): R48–R50 No
Rosenthal (David), Ed. The Nature of Mind Book - Cited (via Paper Cited) Bibliographical details to be supplied 10%
Sadler (Matthew) & Regan (Natasha) Game Changer: AlphaZero's Groundbreaking Chess Strategies and the Promise of AI Book - Cited Medium Quality Abstract Sadler (Matthew) & Regan (Natasha) - Game Changer: AlphaZero's Groundbreaking Chess Strategies and the Promise of AI 3%
Savulescu (Julian) Should a human-pig chimera be treated as a person? Paper - Cited Low Quality Abstract Aeon, 14 July, 2016 Yes
Seibt (Johanna) Fission, Sameness, and Survival: Parfit’s Branch Line Argument Revisited Paper - Cited Medium Quality Abstract Metaphysica 1.2 (2000), pp. 95-134 No
Seth (Anil Kumar) Interoceptive inference, emotion, and the embodied self Paper - Cited Medium Quality Abstract Trends in Cognitive Sciences, November 2013, Vol. 17, No. 11 No
Seth (Anil Kumar) The real problem Paper - Cited Medium Quality Abstract Aeon, 02 November, 2016 Yes
Shand (John) Central Issues of Philosophy Book - Cited (via Paper Cited) Medium Quality Abstract Bibliographical details to be supplied 35%
Shoemaker (David) Moral Issues at the End of Life Paper - Cited Low Quality Abstract Shoemaker (David) - Personal Identity and Ethics: A Brief Introduction, 2009, Chapter 6 Yes
Shoemaker (David) Personal Identity and Ethics Paper - Cited Medium Quality Abstract Stanford Encyclopaedia of Philosophy, 2005-12 Yes
Shoemaker (David) Personal Identity and Ethics: A Brief Introduction Book - Cited (via Paper Cited) Low Quality Abstract Bibliographical details to be supplied Yes
Shoemaker (David) Personal Identity and Immortality Paper - Cited High Quality Abstract Shoemaker (David) - Personal Identity and Ethics: A Brief Introduction, 2009, Chapter 1 Yes
Shoemaker (David) Personal Identity and Self-Regarding Ethics - Alternative Approaches Paper - Cited Low Quality Abstract Shoemaker (David) - Personal Identity and Ethics: A Brief Introduction, 2009, Chapter 3 Yes
Shoemaker (David) Personal Identity, Rational Anticipation, and Self-Concern Paper - Cited High Quality Abstract Shoemaker (David) - Personal Identity and Ethics: A Brief Introduction, 2009, Chapter 2 Yes
Shoemaker (Sydney) Functionalism and Personal Identity - a Reply Paper - Cited Medium Quality Abstract Nous, 38:3 (2004), pp. 525-533 22%
Shoemaker (Sydney) Identity, Cause and Mind Book - Cited (via Paper Cited) Medium Quality Abstract Bibliographical details to be supplied 5%
Shoemaker (Sydney) Personal Identity: a Materialist Account Paper - Cited Medium Quality Abstract Shoemaker & Swinburne - Personal Identity, 1984, pp. 67-132 22%
Shoemaker (Sydney) Self and Substance Paper - Cited Medium Quality Abstract Shoemaker - Identity, Cause and Mind No
Shoemaker (Sydney) & Swinburne (Richard) Personal Identity Book - Cited Medium Quality Abstract Shoemaker (Sydney) & Swinburne (Richard) - Personal Identity 11%
Sider (Ted) Four-dimensionalism: An Ontology of Persistence and Time Book - Cited Medium Quality Abstract Sider (Ted) - Four-dimensionalism: An Ontology of Persistence and Time 12%
Sider (Ted) Naturalness, Intrinsicality, and Duplication Paper - Cited Medium Quality Abstract Ted Sider's Website: Sider's unpublished PhD Dissertation. 3%
Singer (Peter), Ed. A Companion to Ethics Book - Cited (via Paper Cited) Medium Quality Abstract Bibliographical details to be supplied 4%
Smith (Barry C.), Broks (Paul), Kennedy (A.L.) & Evans (Jules) Audio: What Does It Mean to Be Me? Paper - Cited High Quality Abstract BBC Website, April 2015 Yes
Snowdon (Paul) Personal Identity and Brain Transplants Paper - Cited Medium Quality Abstract Cockburn - Human Beings, 1991 Yes
Snowdon (Paul) Persons and Personal Identity Paper - Cited Medium Quality Abstract Lovibond & Williams - Identity, Truth & Value: Essays for David Wiggins, 1996 Yes
Snowdon (Paul) Persons, Animals, and Bodies Paper - Cited Low Quality Abstract Bermudez, Marcel & Eilan - The Body and the Self, 1995 Yes
Snowdon (Paul) The Self and Personal Identity Paper - Cited Medium Quality Abstract Shand (John) - Central Issues of Philosophy, Chapter 9 Yes
Spitzer (Robert), Skodol (Andrew), Gibbon (Miriam) & Williams (Janet) DSM-III Casebook: A Learning Companion to DSM III Book - Cited Spitzer (Robert), Skodol (Andrew), Gibbon (Miriam) & Williams (Janet) - DSM-III Casebook: A Learning Companion to DSM III No
Stapp (Henry P.) Quantum Interactive Dualism, II: The Libet and Einstein-Podolsky-Rosen Causal Anomalies Paper - Cited Medium Quality Abstract Erkenntnis Vol. 65, No. 1, Prospects for Dualism: Interdisciplinary Perspectives (2006), pp. 117-142 No
Stich (Stephen) & Warfield (Ted), Eds. Blackwell Guide to the Philosophy of Mind Book - Cited (via Paper Cited) Bibliographical details to be supplied 5%
Sturgeon (Scott) Matters of Mind Book - Cited (via Paper Cited) Medium Quality Abstract Bibliographical details to be supplied 12%
Sturgeon (Scott) Zombies and Ghosts Paper - Cited High Quality Abstract Sturgeon - Matters of Mind, 2000, Chapter 5 78%
Sudduth (Michael) Reformed Epistemology and Christian Apologetics Paper - Cited Medium Quality Abstract Website, April 16, 2000 17%
Swinburne (Richard) Personal Identity: The Dualist Theory Paper - Cited Low Quality Abstract Shoemaker & Swinburne - Personal Identity, 1984, pp. 1-66 19%
Tegmark (Max) Life 3.0: Being Human in the Age of Artificial Intelligence Book - Cited Medium Quality Abstract Tegmark (Max) - Life 3.0: Being Human in the Age of Artificial Intelligence Yes
Tobia (Kevin Patrick) Personal Identity and the Phineas Gage Effect Paper - Cited Low Quality Abstract Analysis, Volume 75, Issue 3, 1 July 2015, Pages 396–405 Yes
Todman (Theo) Aristotle - Sea Battle Paper - Cited Final Year Birkbeck BA Essay, 2003 Yes
Todman (Theo) Locke on Personal Identity Paper - Cited Final Year Birkbeck BA Essay, 2003 Yes
Todman (Theo) Review - Frankfurt - Freedom of the Will and the Concept of a Person Paper - Cited BA Essay, 2002? Yes
Todman (Theo) Review - Wong - Relativism Paper - Cited BA Essay, 2002? Yes
Todman (Theo) Thesis - Chapter 01 (Introduction) Paper - Referencing   Yes
Todman (Theo) Thesis - Personal Identity Paper - Referencing High Quality Abstract   Yes
Todman (Theo) Thesis - Psychological Continuity - Forward Paper - Referencing Medium Quality Abstract   Yes
Tolstoy (Leo) The Death of Ivan Ilyich Paper - Cited Medium Quality Abstract Tolstoy (Leo) - The Death of Ivan Ilyich and Other Stories Yes
Tolstoy (Leo) The Death of Ivan Ilyich and Other Stories Book - Cited (via Paper Cited) Low Quality Abstract Bibliographical details to be supplied 30%
Trendelenberg (Adolf) A Contribution to the History of the Word Person Paper - Cited Low Quality Abstract Monist, 20 (1910), 336-363 Yes
Unger (Peter) I Do Not Exist Paper - Cited Low Quality Abstract MacDonald - Perception & Identity - Essays Presented to A J Ayer with His Replies, 1979 Yes
Unger (Peter) Identity, Consciousness and Value Book - Cited Medium Quality Abstract Unger (Peter) - Identity, Consciousness and Value Yes
Unger (Peter) The Mental Problems of the Many Paper - Cited Medium Quality Abstract Oxford Studies in Metaphysics, Vol.1 (2004): 195-222 8%
Unger (Peter) The Physical Approach To Our Survival Paper - Cited Medium Quality Abstract Unger - Identity, Consciousness and Value, Chapter 4 Yes
Unger (Peter) There are no Ordinary Things Paper - Cited Low Quality Abstract Synthese 71, 1979, pp. 117-154 No
Unger (Peter) Why There Are No People Paper - Cited Medium Quality Abstract Midwest Studies in Philosophy (Vol IV) - Metaphysics, 1979 5%
Updike (John) Self-Consciousness Book - Cited Medium Quality Abstract Updike (John) - Self-Consciousness 6%
Van Inwagen (Peter) Extreme Answers to the Special Composition Question: Nihilism and Universalism Paper - Cited Van Inwagen - Material Beings; 1990; Ch. 8 No
Van Inwagen (Peter) Four-Dimensional Objects Paper - Cited Low Quality Abstract Haslanger (Sally) & Kurtz (Roxanne) - Persistence : Contemporary Readings 22%
Van Inwagen (Peter) Material Beings Book - Cited (via Paper Cited) Medium Quality Abstract Bibliographical details to be supplied 27%
Van Inwagen (Peter) Materialism and the Psychological-continuity Account of Personal Identity Paper - Cited Medium Quality Abstract Van Inwagen - Ontology, Identity and Modality, Part II: Identity, Chapter 9, 1997 Yes
Van Inwagen (Peter) Ontology, Identity and Modality: Essays in metaphysics Book - Cited (via Paper Cited) Medium Quality Abstract Bibliographical details to be supplied 17%
Van Inwagen (Peter) The Doctrine of Arbitrary Undetached Parts Paper - Cited Medium Quality Abstract Van Inwagen - Ontology, Identity and Modality, Part II: Identity, Chapter 5, 1981 No
Van Inwagen (Peter) The Possibility of Resurrection Paper - Cited Low Quality Abstract The International Journal for Philosophy of Religion, Volume 9, 1978 56%
Van Inwagen (Peter) & Zimmerman (Dean) Metaphysics: The Big Questions Book - Cited (via Paper Cited) Medium Quality Abstract Bibliographical details to be supplied 17%
Van Inwagen (Peter) & Zimmerman (Dean) Persons: Human and Divine Book - Cited (via Paper Cited) Medium Quality Abstract Bibliographical details to be supplied 3%
Wasserman (Ryan) The Constitution Question Paper - Cited High Quality Abstract Nous, Dec2004, Vol. 38 Issue 4, p693, 18p 67%
Wearing (Deborah) Forever Today - A Memoir of Love and Amnesia Book - Cited Medium Quality Abstract Wearing (Deborah) - Forever Today - A Memoir of Love and Amnesia 10%
Weatherson (Brian) Are You a Sim? Paper - Cited Low Quality Abstract Philosophical Quarterly, 2003, Vol. 53: 425-31 No
Wegner (Daniel) The Illusion of Conscious Will Book - Cited Medium Quality Abstract Wegner (Daniel) - The Illusion of Conscious Will No
Wiggins (David) Continuants: Their Activity, Their Being, and Their Identity Book - Cited Medium Quality Abstract Wiggins (David) - Continuants: Their Activity, Their Being, and Their Identity 14%
Wiggins (David) Continuants: Their Activity, Their Being, and Their Identity: Introduction Paper - Cited Medium Quality Abstract Wiggins (David) - Continuants: Their Activity, Their Being, and Their Identity Yes
Wiggins (David) Identity & Spatio-temporal Continuity Book - Cited Medium Quality Abstract Wiggins (David) - Identity & Spatio-temporal Continuity 5%
Wiggins (David) Identity, Individuation, and Substance Paper - Cited Medium Quality Abstract Wiggins (David) - Continuants: Their Activity, Their Being, and Their Identity 63%
Wiggins (David) On Being in the Same Place at the Same Time Paper - Cited High Quality Abstract Rea - Material Constitution - A Reader Yes
Wiggins (David) Personal Identity Paper - Cited Low Quality Abstract Wiggins - Sameness and Substance Renewed, 2001, Chapter 7 48%
Wiggins (David) Personal Identity (S&S) Paper - Cited Low Quality Abstract Wiggins - Sameness and Substance, 1980, Chapter 6 No
Wiggins (David) Reply to Snowdon (Persons and Personal Identity) Paper - Cited Lovibond & Williams - Identity, Truth & Value: Essays for David Wiggins, 1996 Yes
Wiggins (David) Sameness and Substance Book - Cited Medium Quality Abstract Wiggins (David) - Sameness and Substance 11%
Wiggins (David) Sameness and Substance Renewed Book - Cited Medium Quality Abstract Wiggins (David) - Sameness and Substance Renewed 16%
Wiggins (David) The Person as Object of Science, as Subject of Experience, and as Locus of Value Paper - Cited Medium Quality Abstract Peacocke & Gillett - Persons and Personality: A Contemporary Inquiry, 1987, Chapter 4 Yes
Wikipedia Abby and Brittany Hensel Paper - Cited Medium Quality Abstract Wikipedia; Extract taken 15 March 2023 No
Wikipedia Amoeba (genus) Paper - Cited Medium Quality Abstract Wikipedia; Extract taken 10 May 2023 No
Wikipedia Anterograde amnesia Paper - Cited Medium Quality Abstract Wikipedia; Extract taken 8th April 2023 17%
Wikipedia Blastocyst Paper - Cited Medium Quality Abstract Wikipedia; Extract taken 23 May 2023 No
Wikipedia Brain Death Paper - Cited Medium Quality Abstract Wikipedia, taken 28th February 2023 No
Wikipedia Central Nervous System Paper - Cited Medium Quality Abstract Wikipedia, taken 28th February 2023 No
Wikipedia Chimera (Genetics) Paper - Cited Medium Quality Abstract Wikipedia, taken 1st March 2023 No
Wikipedia Chimera (Mythology) Paper - Cited Low Quality Abstract Wikipedia, taken 1st March 2023 No
Wikipedia Conjoined Twins Paper - Cited Medium Quality Abstract Wikipedia; Extract taken 15 March 2023 10%
Wikipedia Craniopagus Parasiticus Paper - Cited Medium Quality Abstract Wikipedia; Extract taken 15 March 2023 No
Wikipedia Craniopagus Twins Paper - Cited Medium Quality Abstract Wikipedia; Extract taken 18 July 2017 Yes
Wikipedia Cyborg Paper - Cited Medium Quality Abstract Wikipedia, taken 8th March 2023 14%
Wikipedia Cytokinesis Paper - Cited Medium Quality Abstract Wikipedia; Extract taken 10 May 2023 17%
Wikipedia Dicephalic Parapagus Twins Paper - Cited Medium Quality Abstract Wikipedia; Extract taken 15 March 2023 No
Wikipedia Diprosopus Paper - Cited Medium Quality Abstract Wikipedia; Extract taken 15 March 2023 No
Wikipedia Dizygotic (fraternal) twins Paper - Cited Medium Quality Abstract Wikipedia; Extract taken 22 May 2023 No
Wikipedia Embryo Paper - Cited Medium Quality Abstract Wikipedia; Extract taken 19 March 2023 17%
Wikipedia Fetus Paper - Cited Medium Quality Abstract Wikipedia; Extract taken 23 March 2023 17%
Wikipedia Group C nerve fiber Paper - Cited Medium Quality Abstract Wikipedia; Extract taken 04 May 2023 No
Wikipedia Hybrid (Biology) Paper - Cited Medium Quality Abstract Wikipedia, taken 1st March 2023 33%
Wikipedia Hybridoma Technology Paper - Cited Medium Quality Abstract Wikipedia, taken 1st March 2023 No
Wikipedia Hylomorphism Paper - Cited Low Quality Abstract Wikipedia, last modified on 1 January 2014 Yes
Wikipedia Microchimerism Paper - Cited Medium Quality Abstract Wikipedia, taken 1st March 2023 No
Wikipedia Mitosis Paper - Cited Medium Quality Abstract Wikipedia; Extract taken 10 May 2023 8%
Wikipedia Monozygotic (identical) twins Paper - Cited Medium Quality Abstract Wikipedia; Extract taken 22 May 2023 No
Wikipedia Mule Paper - Cited Medium Quality Abstract Wikipedia, taken 1st March 2023 No
Wikipedia Neanderthal Paper - Cited Medium Quality Abstract Wikipedia; Extract taken 27 March 2023 3%
Wikipedia Near-death experience Paper - Cited Medium Quality Abstract Wikipedia; Extract taken 30 April 2023 8%
Wikipedia Peripheral nervous system Paper - Cited Medium Quality Abstract Wikipedia, taken 28th February 2023 No
Wikipedia Persistent vegetative state Paper - Cited Low Quality Abstract Wikipedia; Extract taken 03 May 2023 12%
Wikipedia Polycephaly Paper - Cited Medium Quality Abstract Wikipedia; Extract taken 15 March 2023 10%
Wikipedia Pre-embryo Paper - Cited Medium Quality Abstract Wikipedia; Extract taken 23 May 2023 No
Wikipedia Retrograde amnesia Paper - Cited Medium Quality Abstract Wikipedia; Extract taken 8th April 2023 12%
Wikipedia Zygote Paper - Cited Low Quality Abstract Wikipedia; Extract taken 23 May 2023 No
Wilkes (Kathleen) Real People: Personal Identity Without Thought Experiments Book - Cited Medium Quality Abstract Wilkes (Kathleen) - Real People: Personal Identity Without Thought Experiments Yes
Williams (Bernard) Problems of the Self Book - Cited (via Paper Cited) Low Quality Abstract Bibliographical details to be supplied 37%
Williams (Bernard) The Makropulos Case: Reflections on the Tedium of Immortality Paper - Cited High Quality Abstract Williams - Problems of the Self Yes
Williams (Bernard) The Self and the Future Paper - Cited High Quality Abstract Williams - Problems of the Self Yes
Williamson (Timothy) The Necessity and Determinacy of Distinctness Paper - Cited Medium Quality Abstract Lovibond & Williams - Identity, Truth & Value: Essays for David Wiggins 27%
Wilson (Jack) Beyond Horses and Oak Trees: A New Theory of Individuation for Living Entities Paper - Cited High Quality Abstract Wilson, Jack - Biological Individuality: The identity and Persistence of Living Entities; 1999, Chap. 1, pp. 1-21 Yes
Wilson (Jack) Biological Individuality - The identity and Persistence of Living Entities Book - Cited Medium Quality Abstract Wilson (Jack) - Biological Individuality - The identity and Persistence of Living Entities Yes
Wittgenstein (Ludwig) Philosophical Investigations Book - Cited Low Quality Abstract Wittgenstein (Ludwig) - Philosophical Investigations No
Wollheim (Richard) The Thread of Life Book - Cited Low Quality Abstract Wollheim (Richard) - The Thread of Life 7%
Wong (David) Relativism Paper - Cited High Quality Abstract Singer - A Companion to Ethics Yes
Zimmerman (Dean) Bodily Resurrection: The Falling Elevator Model Revisited Paper - Cited High Quality Abstract Gasser (Georg) - Personal Identity and Resurrection: How Do We Survive Our Death? 2010 Yes
Zimmerman (Dean) Christians Should Affirm Mind-Body Dualism Paper - Cited Low Quality Abstract Peterson (Michael) & Van Arragon (Raymond) - Contemporary Debates in Philosophy of Religion, 2004 Yes
Zimmerman (Dean) Personal Identity and the Survival of Death Paper - Cited Medium Quality Abstract Oxford Handbook of Philosophy of Death; ed. Ben Bradley, Fred Feldman, and Jens Johansson (OUP, 2015), pp. 97-153 42%
Zimmerman (Dean) Problems for Animalism Paper - Cited High Quality Abstract Abstracta Special Issue I – 2008 (Brazil) Yes
Zimmerman (Dean) Reply to Baker's 'Christians Should Reject Mind-Body Dualism' Paper - Cited Low Quality Abstract Peterson (Michael) & Van Arragon (Raymond) - Contemporary Debates in Philosophy of Religion, 2004 Yes
Zimmerman (Dean) The Compatibility of Materialism and Survival: The “Falling Elevator” Model Paper - Cited Low Quality Abstract Faith and Philosophy, Vol 16, Issue 2, April 1999, pp 194-212 Yes
Zimmerman (Dean), Ed. Oxford Studies in Metaphysics: Volume 3 Book - Cited (via Paper Cited) Low Quality Abstract Bibliographical details to be supplied 10%


Text Colour Conventions

  1. Blue: Text by me; © Theo Todman, 2025
  2. Mauve: Text by correspondent(s) or other author(s); © the author(s)
  3. Orange: Text by me for comparison; © Theo Todman, 2025



© Theo Todman, June 2007 - Oct 2025.Please address any comments on this page to theo@theotodman.com.File output:
Website Maintenance Dashboard
Return to Top of this PageReturn to Theo Todman's Philosophy PageReturn to Theo Todman's Home Page