9/18/2023 0 Comments Tell me why door puzzleThe situation is reminiscent of an incident I read about in a textbook on abnormal psychology: The doctors in a mental institution were thinking of releasing a certain schizophrenic patient. The inaccurate liar will believe that two plus two does not equal four (since he is inaccurate) and will then lie and say that it does he will also answer yes. The accurate truth teller knows that it is and will truthfully answer yes. For example, suppose you ask whether two plus two equals four. The interesting thing is that each brother will give the same answer to the same question. The lying brother is totally inaccurate in his beliefs all true propositions he believes to be false, and all false propositions he believes to be true. Now, the truth teller is also totally accurate in all his beliefs all true propositions he believes to be true and all false propositions he believes to be false. Suppose there are two identical twin brothers, one who always lies and the other who always tells the truth.
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