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Let us define a Zero-insight proof to be one which gives absolutely no insight into the statement of theorem or how it works but nevertheless proves that the theorem is true.

What are you favourite examples of Zero-insght proofs?

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this should be community wiki – unknown (google) Feb 16 2012 at 2:03
I rarely vote down a post, but I did on this one. If I could, I would also vote to close and delete... – François G. Dorais♦ Feb 16 2012 at 2:07
A related issue arises in mathoverflow.net/questions/12342/…. – Joel David Hamkins Feb 16 2012 at 2:20
@François: A detailed explanation of the reasons why this question raises your wrath like it seemingly does would make an interesting piece. At the moment, I only have guesses (but maybe this is obvious to all?)... – Didier Piau Feb 16 2012 at 10:07
@Didier: The main reason is that MO is meant to be a resource of useful information. This question requests a big list of useless information... Also, zero-insight proofs are not very hard to find. As Joel observed, proofs by contradiction almost always provide no insight. – François G. Dorais♦ Feb 17 2012 at 20:06
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closed as not a real question by Harry Gindi, Felipe Voloch, Yemon Choi, Karl Schwede, Andres Caicedo Feb 16 2012 at 2:29

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