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16477 | Asserting not-p is saying p is false [Russell] |
Full Idea: When you do what a logician would call 'asserting not-p', you are saying 'p is false'. | |
From: Bertrand Russell (An Inquiry into Meaning and Truth [1940], 5) | |
A reaction: This is presumably classical logic. If we could label p as 'undetermined' (a third truth value), then 'not-p' might equally mean 'undetermined'. |