Got a quick question about flagging questions as duplicates; I've already established that ideally it should be identical or very similar to a question previously asked, but the window where you choose to flag questions as duplicate says "and already has an answer"; does this necessitate that the person who asked chose one of the answers as the "official" answer? Or does it just have to have some posted answers that appear to be correct?
Bonus question: is there a limit to how recently the original has to have been posted to justify it being duplicate?