> @mistermarko Also, the phrase "If you can't identify the flaw in the proof then it's legitimate" is just plain wrong. A proof does not magically become illegitimate the moment someone spots a flow - it is always illegitimate. – *user1729 Sep 1 '14 at 8:43* (https://math.stackexchange.com/questions/915710/proof-that-1-11-1-cdots-frac12-and-related-conclusion-that-zeta2/915714#comment1890316_915714)