I don't think there is any real way you could tell if it is an intentional dup or an unintentional one. I, for one, often load up RAT in the morning and open tabs on all the interesting questions. Sometimes i get distracted and its hours later before I finish a reply. At that point I have the option of posting and seeing if someone else came up with the same way (often as pleasing as having your very own way) or I could open a new tab on the discussion and see if someone has already replied. More often I choose the former because it is eaiser, more fun, and generaly does no harm. The second is harder and adds no value. Your idea would be to downvote me for what? For delaying before answering? Seems rediculous to me.
