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Full Idea
A Humean conception of reality lies behind, and motivates, the development of extensional logics with extensional semantics.
Gist of Idea
Humean conceptions of reality drive the adoption of extensional logic
Source
Brian Ellis (Scientific Essentialism [2001], 8.04)
Book Ref
Ellis,Brian: 'Scientific Essentialism' [CUP 2007], p.269
A Reaction
His proposal seems to be that it rests on the vision of a domain of separated objects. The alternative view seems to be that it is mathematics, with its absolute equality between 'objects', which drives extensionalism.
13606 | Humean conceptions of reality drive the adoption of extensional logic [Ellis] |
13821 | Extensionality is built into ordinary logic semantics; names have objects, predicates have sets of objects [Bostock] |
13362 | If an object has two names, truth is undisturbed if the names are swapped; this is Extensionality [Bostock] |
9458 | Extensionalists say that quantifiers presuppose the existence of their objects [Jacquette] |
21719 | Extensionalism means what is true of a function is true of coextensive functions [Linsky,B] |