Identity in 4d

Philosophical Studies 140 (2):179 - 195 (2008)
Four-dimensionalists offer a unified picture of various puzzles about identity over time, including the puzzle of fission, the puzzle of constitution and the puzzle of undetached parts. What unifies the four-dimensionalist approaches to these puzzles is the possibility of temporal overlap—the possibility for distinct continuants to share a common temporal part, or stage. I claim that the unified picture is inconsistent, if there are informative criteria of identity over time. I will show that while temporal overlap is compatible with four-dimensionalist criteria of diachronic composition, temporal overlap is incompatible with any four-dimensionalist criteria of diachronic identity.
Keywords Identity  Persistence  Four-dimensionalism  Composition  Time
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References found in this work BETA
David Lewis (1976). Survival and Identity. In Amelie Oksenberg Rorty (ed.), The Identities of Persons. University of California Press 17-40.

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