vicious circularity

the logical problem that is presented by certain kinds of self-referring paradox, such as This sentence is a lie, and by certain related cruxes in set theory, notably those arising from the idea that a set can be the member of itself. See also circular reasoning.

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Psychology term of the day

December 7th 2024

tension headache

a persistent headache produced by acute or prolonged emotional or physical strain and usually accompanied by insomnia, irritability, and painful contraction of the neck muscles.