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2. Reason / D. Definition / 11. Ostensive Definition

[definition by pointing out one or more examples]

5 ideas
Only what is logically complex can be defined; what is simple must be pointed to [Frege]
Ostensive definitions needn't involve pointing, but must refer to something specific [Salmon,N]
Ostensive definitions look simple, but are complex and barely explicable [Gupta]
Ostensive definitions point to an object which an expression denotes [Mautner]
Simple things like 'red' can be given real ostensive definitions [Lowe]