Full Idea
The problem for the endurance view of temporary intrinsic properties like shape is met be either saying shape is a disguised relational property, or only present properties are intrinsic, or the shapes belong to different things (perdurance).
Gist of Idea
There are three responses to the problem that intrinsic shapes do not endure
Source
David Lewis (On the Plurality of Worlds [1986], 4.2)
Book Reference
Lewis,David: 'On the Plurality of Worlds' [Blackwell 2001], p.204
A Reaction
[compressed] It is certainly implausible to deny that shape is a feature of all physical objects. Or it appears to be. Shapes are hard to pin down at the quantum level. How do you sharply divide moments for the perdurance view? ...