Almost Identical, Almost Innocent
Hawley (Katherine)
Source: Royal Institute of Philosophy Supplements, Volume 82 (Metaphysics) - July 2018, pp. 249-263
Paper - Abstract

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Author’s Abstract

  1. In his book "Lewis (David) - Parts of Classes" (1991), David Lewis discusses the idea that composition is identity, alongside the idea that mereological overlap is a form of partial identity1. But this notion of partial identity2 does nothing to help Lewis achieve his goals in that book. So why does he mention it?
  2. I explore and resolve this puzzle, by comparing Parts of Classes with Lewis’s invocation of partial identity3 in his 1993 paper "Lewis (David) - Many, But Almost One", where he uses it to address Peter Unger’s problem of the many4.
  3. I raise some concerns about this way of thinking of partial identity5, but conclude that, for Lewis, it is an important defence against accusations of ontological profligacy.

Comment:

(To be) annotated hard copy filed in "Various - Papers on Desktop".

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