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Ideas for 'fragments/reports', 'An Inquiry into Meaning and Truth' and 'The Second Sex'

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3. Truth / A. Truth Problems / 7. Falsehood

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'.