I know this kind of question is asked before but answers were not clear.
Recently, like yesterday, a nice question, got 18 (and counting) answers! Many interesting, some out there. While I have seen many questions either closed or asked for an edit for even 5 or 6 answers, this one has not drawn any comment. I was under the impression that idea of a puzzle should be to have a unique solution or maybe 2 or 3 possibilities.
What is the criteria for number of answers, if any?
BTW this is not about the 18 answer question. I just need policy clarification.