Single Idea 16477

[catalogued under 3. Truth / A. Truth Problems / 7. Falsehood]

Full Idea

When you do what a logician would call 'asserting not-p', you are saying 'p is false'.

Gist of Idea

Asserting not-p is saying p is false

Source

Bertrand Russell (An Inquiry into Meaning and Truth [1940], 5)

Book Reference

Russell,Bertrand: 'An Inquiry into Meaning and Truth' [Penguin 1967], p.77


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'.