byrnema comments on Concepts Don't Work That Way - Less Wrong

57 Post author: lukeprog 28 September 2011 02:01AM

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Comment author: byrnema 01 October 2011 11:28:43AM 1 point [-]

That actually is a good example of a brittle requirement,

Yeah, good point. I'm entirely convinced. Even for an apparently straight-forward category like 'bird', there's not a single necessary condition you can point to. Even if there are some examples of categories with necessary conditions (I don't know), this is evidence that the necessary conditions aren't an intrinsic part of the way we structure a concept.