Liar paradox - If this sentence were true, then what it says would be the truth, implying that it is false which is a contradiction, so if it were false then it is false that this sentence is false, hence it is true which is also a contradiction.

submitted by JasonCarswell from en.wikipedia.org

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[–]JasonCarswell[S] 1 insightful - 2 fun1 insightful - 1 fun2 insightful - 2 fun -  (1 child)

Then I guess this statement is true:

You know everything.

[–]JoJo 2 insightful - 2 fun2 insightful - 1 fun3 insightful - 2 fun -  (0 children)

No, that statement is false, but it is false because it presumes its truthfulness, because if it didn't, only then could you say that it is false, do you get it?