Ha:"Now, consider the set (of data) of all those sets that are not members of themselves. Call this R. Is R a member of itself, or is it not? If it is a member of itself, then it is one of the things that is not a member of itself, and so it is not a member of itself. If, on the other hand, it is not a member of itself, then it is one of those sets that are not members of themselves, and so it IS a member of itself."
— Dec 31, 2013 08:58AM
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