<!DOCTYPE html><HTML lang="en"> <head><meta charset="utf-8"> <title>Seibt (Johanna) - Fission, Sameness, and Survival: Parfit s Branch Line Argument Revisited (Theo Todman's Book Collection - Paper Abstracts) </title> <link href="../../TheosStyle.css" rel="stylesheet" type="text/css"><link rel="shortcut icon" href="../../TT_ICO.png" /></head> <BODY> <CENTER> <div id="header"><HR><h1>Theo Todman's Web Page - Paper Abstracts</h1><HR></div><A name="Top"></A> <TABLE class = "Bridge" WIDTH=950> <tr><th><A HREF = "../../PaperSummaries/PaperSummary_09/PaperSummary_9803.htm">Fission, Sameness, and Survival: Parfit s Branch Line Argument Revisited</A></th></tr> <tr><th><A HREF = "../../Authors/S/Author_Seibt (Johanna).htm">Seibt (Johanna)</a></th></tr> <tr><th>Source: Metaphysica 1.2 (2000), pp. 95-134</th></tr> <tr><th>Paper - Abstract</th></tr> </TABLE> </CENTER> <P><CENTER><TABLE class = "Bridge" WIDTH=600><tr><td><A HREF = "../../PaperSummaries/PaperSummary_09/PaperSummary_9803.htm">Paper Summary</A></td><td><A HREF = "../../PaperSummaries/PaperSummary_09/PapersToNotes_9803.htm">Notes Citing this Paper</A></td><td><A HREF="#ColourConventions">Text Colour-Conventions</a></td></tr></TABLE></CENTER></P> <hr><P><FONT COLOR = "0000FF"><u>Author s Introduction</u><FONT COLOR = "800080"><ol type="1"><li>Life is dangerous but, as the lore of science fiction has it, so is survival. A moderately malfunctioning teletransporter may create a physical and psychological duplicate of you on Mars while failing to destroy the original on Earth. In this way you have apparently succeeded in surviving twice at once, and thus should be identical with either survivor. But since you cannot be identical with two survivors, it seems that we should say that neither of them qualifies as your survivor. </li><li>Such fictional scenarios of fission or reduplication by teletransportation, or cloning, or <a name="1"></a><A HREF="../../Notes/Notes_7/Notes_763.htm">brain transplantation</A><SUP>1</SUP> are well-known gambits in the current debate about personal identity. With technological fancy and surgical graphicness varying to taste, these illustrations commonly serve to unhinge accounts of personal identity based on physical or <a name="2"></a><A HREF="../../Notes/Notes_0/Notes_16.htm">psychological continuity</A><SUP>2</SUP>. If two persons, Y and Z, can be shown to be physically or psychologically continuous with person X, such continuity cannot be what personal identity consists in. </li><li>This common use, however, is not the only one that has been made of fission or reduplication scenarios. In his discussion of physical and psychological "branch line cases" Derek Parfit urges a rather different and, I believe, systematically much more momentous conclusion. If it is conceivable that the graph representing the continuation of a person's physical or mental existence is not linear, then, Parfit s argues, the relation of personal identity is not necessarily coextensive with the relation of survival.  Branch line cases thus entail according to Parfit a conceptual distinction between the notion of identity and the notion of survival. </li></ol> </FONT><FONT COLOR = "0000FF"><HR></P><a name="ColourConventions"></a><p><b>Text Colour Conventions (see <A HREF="../../Notes/Notes_10/Notes_1025.htm">disclaimer</a>)</b></p><OL TYPE="1"><LI><FONT COLOR = "0000FF">Blue</FONT>: Text by me; &copy; Theo Todman, 2018</li><LI><FONT COLOR = "800080">Mauve</FONT>: Text by correspondent(s) or other author(s); &copy; the author(s)</li></OL> <BR><HR><BR><CENTER> <TABLE class = "Bridge" WIDTH=950> <TR><TD WIDTH="30%">&copy; Theo Todman, June 2007 - August 2018.</TD> <TD WIDTH="40%">Please address any comments on this page to <A HREF="mailto:theo@theotodman.com">theo@theotodman.com</A>.</TD> <TD WIDTH="30%">File output: <time datetime="2018-08-02T07:25" pubdate>02/08/2018 07:25:09</time> <br><A HREF="../../Notes/Notes_10/Notes_1010.htm">Website Maintenance Dashboard</A></TD></TR> <TD WIDTH="30%"><A HREF="#Top">Return to Top of this Page</A></TD> <TD WIDTH="40%"><A HREF="../../Notes/Notes_11/Notes_1140.htm">Return to Theo Todman's Philosophy Page</A></TD> <TD WIDTH="30%"><A HREF="../../index.htm">Return to Theo Todman's Home Page</A></TD> </TR></TABLE></CENTER><HR> </BODY> </HTML>