CSI 2101 Study Guide - Quiz Guide: Proxy Server, Free Variables And Bound Variables
9 Oct 2021
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Question 50: an ancient sicilian legend says that the barber in a remote town who can be reached only by traveling a dangerous mountain road shaves those people, and only those people, who do not shave themselves. This is a classical paradox. (we will use the male pronoun in what follows, assuming that we are talking about males shaving their beards here, and assuming that all men have facial hair. If we restrict ourselves to beards and allow female barbers, then the barber could be female with no contradiction. ) If the barber shaved himself, then he would be violating the rule that he shaves only those people who do not shave themselves. On the other hand, if he does not shave himself, then the rule says that he must shave himself. Neither is possible, so there can be no such barber. Question 18: when planning a party you want to know whom to invite.
