Multiple Barbers
If the paradox is altered so that there may be multiple barbers in the town, then the paradox may or may not be resolved, depending on the exact phrasing of the initial rules.
If the initial rules state that every man in town must keep himself clean-shaven, either by
- Shaving himself, or
- going to a barber.
(but not both at once), then the paradox is solved. Each barber can be shaved by another barber.
However, if the initial rules describe the responsibilities of the barbers rather than the town's residents in general, then the paradox remains. In this version, the rules state that each barber must shave everyone in town who does not shave himself (and no one else). If Barber A asks Barber B to shave his beard, then Barber A counts as "a person who does not shave himself". But because of this classification, Barber A must shave himself, rather than let Barber B do it for him. However, if Barber A is shaving himself, then he must not shave himself. Either way, Barber A is stuck. Other barbers face the same problem.
Read more about this topic: Barber Paradox
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