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It may happen that a question has zero answers, but is actually already answered satisfactorily in a comment. An example is this question. I think this is somewhat misleading, as the "0 answers" ...

Athanagor Wurlitzer has recently been adding answers saying "This question has been answered in the comments" (see, e.g. https://mathoverflow.net/a/156051/3). I'm inclined to delete these answers (...