Barbershop Paradox
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High Quality Content by WIKIPEDIA articles! The Barbershop Paradox was proposed by Lewis Carroll in a three-page essay entitled "A Logical Paradox" which appeared in the July 1894 issue of Mind. The name comes from the "ornamental" short story that Carroll uses to illustrate the paradox (although it had appeared several times in more abstract terms in his writing and correspondence before the story was published). Carroll claimed that it illustrated "a very real difficulty in the Theory of Hypotheticals" in use at the time.Briefly, the story runs as follows: Uncle Joe, Uncle Jim and their…mehr

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High Quality Content by WIKIPEDIA articles! The Barbershop Paradox was proposed by Lewis Carroll in a three-page essay entitled "A Logical Paradox" which appeared in the July 1894 issue of Mind. The name comes from the "ornamental" short story that Carroll uses to illustrate the paradox (although it had appeared several times in more abstract terms in his writing and correspondence before the story was published). Carroll claimed that it illustrated "a very real difficulty in the Theory of Hypotheticals" in use at the time.Briefly, the story runs as follows: Uncle Joe, Uncle Jim and their nephew are walking to the barber shop. There are three barbers who live and work in the shop Allen, Brown, and Carr but not all of them are always in the shop. Carr is a good barber, and Uncle Jim is keen to be shaved by him. He knows that the shop is open, so at least one of them must be in. He also knows that Allen is a very nervous man, so that he never leaves the shop without Brown going with him.