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Thursday, September 16, 2010

Liar?

If a man says "I always lie", is he telling the truth?

This question having been posed on me countless times in my life, in school as a brainteaser, or from a friend trying to confuse me, I have thought about it countless times. While also countlessly being confused by it. However, by some stroke of luck I have hit the money and came up with the solution.

He is telling a lie.

If he were telling the truth, then he would always lie, and since he just told the truth, he could not always be lying for he just told the truth.. Which puts us into an infinite swirl.

HE CANNOT BE TELLING THE TRUTH

If he were telling a lie, then that would mean that in some other time of his life he has told the truth..... Simple as that, it does not refer directly to the question, it refers to his entire existence.

One dilemma, if he has NEVER told the truth in his entire life, then we come to a crossroads and the statement is insolvable.

The answer truly cannot be defined, but the only way to answer it is that he is lying.

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