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Ramsey, F. P.
Truth and probability
Ramsey, F. P.
All this might anyhow be called metaphysics; but it is regarded as logic when adduced as bearing on an unsolved problem, not simply as information interesting for its own sake. The only one of these which is a distinct science is evidently (2). THE UTILITY OF LOGIC That of (1) above and of (3) are evident: the interesting ones are (2) and (4).