Is it OK to downvote "impossible questions"? With impossible questions I mean questions that are not possible to answer or that are not possible to do (obviously, the OP doesn't know that). For instance:
Anyone knows if P = NP? >>> Not possible to answer
Is there a way to sort an array with a O(logn) complexity? >>> Not possible to do
Related post , but no the same, I'm asking about downvoting, not closing.