Abstract

The Closest-Continuer schema of identity is distinguished here from the Closest-Continuer theory of personal identity, the latter applying the former to personal identity by reference to the self's self-defining activity. Nozick's «Platonic glasses» mode of conceptualizing personal identity is defended against Parfit's objections and extended beyond hypothetical branching to the actual branching hypothesized by the «no-collapse» theories of quantum mechanics. The reader may wish to consult Lev Vaidman's Stanford Encyclopedia of Philosophy essay, «Many-Worlds Interpretation of Quantum Mechanics», for an accessible and sympathetic treatment of this interpretation. See also David Deutsch's philosophical essay on what he calls the «multiverse» in The Fabric of Reality