russell's barber paradox
Russell's barber paradox is a logical paradox formulated by philosopher Bertrand Russell that questions the possibility of a barber who shaves all those in the town who do not shave themselves. It asks whether such a barber can exist, as if the barber shaves himself, he should not shave himself, but if he does not shave himself, then he should shave himself. Thus, it creates a contradiction that challenges the concept of a barber who shaves everyone in the town.
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