<!DOCTYPE html><HTML lang="en"> <head><meta charset="utf-8"> <title>Salmon (Nathan) - Impossible Worlds (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_9499.htm">Impossible Worlds</A></th></tr> <tr><th><A HREF = "../../Authors/S/Author_Salmon (Nathan).htm">Salmon (Nathan)</a></th></tr> <tr><th>Source: Salmon (Nathan) - Metaphysics, Mathematics, and Meaning, 2005</th></tr> <tr><th>Paper - Abstract</th></tr> </TABLE> </CENTER> <P><CENTER><TABLE class = "Bridge" WIDTH=400><tr><td><A HREF = "../../PaperSummaries/PaperSummary_09/PaperSummary_9499.htm">Paper Summary</A></td><td><A HREF="#ColourConventions">Text Colour-Conventions</a></td></tr></TABLE></CENTER></P> <hr><P><FONT COLOR = "0000FF"><U>Philosophers Index Abstract</U><FONT COLOR = "800080"><ol type="1">Responding to william r carter ("philosophical review" 1983, 223-31), the author endorses an intentionally vague essentialist principle concerning the original matter of artifacts. Multiple necessitations of this principle are invoked to argue that "s4" <a name="1"></a><A HREF="../../Notes/Notes_1/Notes_121.htm">modal</A><SUP>1</SUP> propositional logic is incorrect, and that there are distinct yet materially indiscernible worlds, resulting in a theory of impossible worlds. Principles of the identity of factually indiscernible worlds and of the identity of mutually accessible materially indiscernible worlds are proposed. (OSO): It is argued, against Randolph Carter, that if there are merely possible worlds, then indeed there are also impossible worlds. Worlds are things, but impossible worlds are not impossible things. A world, in the sense in which the actual world is only one among many, is a maximal scenario, a total way for things to be-all things. The actual world is the way things are. Merely possible worlds are ways things might have been but are not. Impossible worlds are ways things could not have been.<BR><BR>(PI): Responding to William R Carter ("Philosophical Review" 1983, 223-31), the author endorses an intentionally vague essentialist principle concerning the original matter of artifacts. Multiple necessitations of this principle are invoked to argue that "s4" <a name="2"></a><A HREF="../../Notes/Notes_1/Notes_121.htm">modal</A><SUP>2</SUP> propositional logic is incorrect, and that there are distinct yet materially indiscernible worlds, resulting in a theory of impossible worlds. Principles of the identity of factually indiscernible worlds and of the identity of mutually accessible materially indiscernible worlds are proposed.</ol></FONT><hr><FONT COLOR = "0000FF"><B>Comment: </B><BR><BR>Photocopy filed in <a name="3"></a>"<A HREF = "../../BookSummaries/BookSummary_05/BookPaperAbstracts/BookPaperAbstracts_5974.htm">Various - Papers on Identity Boxes: Vol 16 (S1: Sa-Sl)</A>". Electronic available at OSO<BR><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="2018-08-03T00:13" pubdate>03/08/2018 00:13:21</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>