Full Idea
Even if one is a three-dimensionalist, one might affirm the existence of temporal parts, on the grounds that everything merely endures for an instant.
Clarification
See Idea 12295 for 'three-dimensionalist'
Gist of Idea
Three-dimensionalist can accept temporal parts, as things enduring only for an instant
Source
Kit Fine (In Defence of Three-Dimensionalism [2006], p.2)
Book Reference
'Being: Developments in Contemporary Metaphysics', ed/tr. Le Poidevin,R [CUP 2008], p.2
A Reaction
This seems an important point, as belief in temporal parts is normally equated with four-dimensionalism (see Idea 12296). The idea is that a thing might be 'entirely present' at each instant, only to be replaced by a simulacrum.
Related Ideas
Idea 12296 4-D says things are stretched in space and in time, and not entire at a time or at a location [Fine,K]
Idea 12295 3-D says things are stretched in space but not in time, and entire at a time but not at a location [Fine,K]