"barber paradox" meaning in English

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        "A paradox of self-reference, where, supposing that every man either shaves himself or is shaved by the barber, and the barber shaves all and only the men who do not shave themselves, then it is impossible to determine who shaves the barber."
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        {
          "word": "Grelling-Nelson paradox"
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          "word": "Russell's paradox"
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