Philosophy #29: Tautology

Tautology is an unnecessary repetition of meaning, using dissimilar words that effectively say the same thing. A rhetorical tautology can also be defined as a series of statements that comprise an argument, whereby the statements are constructed in such a way that the truth of the proposition is guaranteed, or that the truth of the proposition cannot be disputed, by defining a dissimilar or synonymous term in terms of another self-referentially. Tautologies play a role in analytic discussions of logic and what it is possible to know.

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