PHILOS 1 Study Guide - Final Guide: Personal Identity, Autobiographical Memory, Justice As Fairness
8 Jun 2016
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Part 1: personal identity (1) explain the difference between qualitative and numerical identity. Qualitative identity has to do with similarities between different individuals or objects. Two things are qualitatively identical when they share a lot of properties. Numerical identity is strict identity: for two things to be numerically identical, they have to be the same. Identity is when every property is the same. Two dimes are not because they occupy different space. (2) state the principle of the indiscernability of identicals. A and b are numerically identical if 95% of a are 95% of b. If you change 5% of organism a to create organism b which, by definition, is identical with a. But then you change 5% of b to create c. given the transitivity of identity a=c even though they are 10% different. Working with a threshold is not going to work.
