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Full Idea
Worm-theoretic Perdurantism says spatio-temporal continuants are mereological fusions of instantaneous temporal parts or stages located at different times; Stage-theoretic Perdurantism says they are instantaneous temporal stages of continuants.
Gist of Idea
Worm Perdurantism has a fusion of all the parts; Stage Perdurantism has one part at a time
Source
Thomas M. Crisp (Presentism [2003], 2.1)
Book Ref
'The Oxford Handbook of Metaphysics', ed/tr. Loux,M /Zimmerman,D [OUP 2005], p.216
A Reaction
[Armstrong, Lewis and Quine defend the first; Sider the second] The Stage view seems to be the common sense view. Sider suggests that the earlier stages are counterparts, not the thing as it currently is.
| 14020 | 'Eternalism' is the thesis that reality includes past, present and future entities [Crisp,TM] |
| 14021 | Worm Perdurantism has a fusion of all the parts; Stage Perdurantism has one part at a time [Crisp,TM] |
| 14022 | The only three theories are Presentism, Dynamic (A-series) Eternalism and Static (B-series) Eternalism [Crisp,TM] |
| 14026 | Presentists can talk of 'times', with no more commitment than modalists have to possible worlds [Crisp,TM] |
| 14025 | The weaker version of Truthmaker: 'truth supervenes on being' [Crisp,TM] |
| 14023 | The Truthmaker thesis spells trouble for presentists [Crisp,TM] |
| 14024 | Truthmaker has problems with generalisation, non-existence claims, and property instantiations [Crisp,TM] |