I just noticed a question that is obviously wrong [here](https://math.stackexchange.com/questions/1842511/how-to-decide-if-a-polynomial-is-symmetric), and the OP doesn't seem to acknowledge it when somebody pointed out. (To clarify, the question was ok, but the OP seemed convinced that his polynomial was symmetric. My choice of example may not be so good, but I have seen other wrong questions in the past.) I voted to close it, and my choice was "unclear what you're asking." However, I feel it isn't really my reason, and other choices don't seem to correspond to my reason to close the topic. What is the most appropriate reason for closing in this case?