## reductio ad absurdum"Reduction to the absurd;" the process of demonstrating that an idea is probably false by first assuming its truth, and then showing how that truth leads to conclusions which can't possibly be true. In A Mathematician's
Apology (1941),^{1} G. H. Hardy
said: "Reductio ad absurdum, which Euclid loved so much, is one of a mathematician's
finest weapons. It is a far finer gambit than any chess play: a chess player
may offer the sacrifice of a pawn or even a piece, but a mathematician offers
the game." ## Reference- Hardy, G. H.
*A Mathematician's Apology*. London: Cambridge University Press, 1941.
## Related category• LOGIC | |||||

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