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Ludwig Wittgenstein - A tautology's truth is certain,...
A tautology's truth is certain, a proposition's possible, a contradiction's impossible. (Certain, possible, impossible: here we have the first indication of the scale that we need in the theory of probability.) (4.464) (Ludwig Wittgenstein)

A tautology's truth is certain, a proposition's possible, a contradiction's impossible. (Certain, possible, impossible: here we have the first indication of the scale that we need in the theory of probability.) (4.464)

Ludwig Wittgenstein

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certain impossible indication need possible probability scale theory truth

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