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Full Idea
We are taught that predicates have extensions - the class of objects of which the predicate is true - which seems hard to deny; but a stronger claim is also made - that extensions are semantically relevant features of predicates.
Gist of Idea
Clearly predicates have extensions (applicable objects), but are the extensions part of their meaning?
Source
Colin McGinn (Logical Properties [2000], Ch.3)
Book Ref
McGinn,Colin: 'Logical Properties' [OUP 2003], p.52
A Reaction
He cites Quine as a spokesman for this view. McGinn is going on to challenge it, by defending universals. It seems to fit in with other externalist theories of concepts and meanings, none of which seems very appealing to me.
6074 | Clearly predicates have extensions (applicable objects), but are the extensions part of their meaning? [McGinn] |
14224 | Equilateral and equiangular aren't the same, as we have to prove their connection [Shalkowski] |
9460 | Extensionalist semantics forbids reference to nonexistent objects [Jacquette] |
9459 | Extensionalist semantics is circular, as we must know the extension before assessing 'Fa' [Jacquette] |
14622 | Referential semantics (unlike Fregeanism) allows objects themselves in to semantic requirements [Fine,K] |
19532 | Truth-conditional referential semantics is externalist, referring to worldly items [Williamson] |
14696 | Simple semantics assigns extensions to names and to predicates [Schroeter] |
14697 | 'Federer' and 'best tennis player' can't mean the same, despite having the same extension [Schroeter] |