Though this suggestion might be way over the top with questions that are ''blatantly off-topic'', there may be easily some bias involved with duplicate ones, shown as follows. Just look at mine: How to handle spaces in path names when variable contains multiple paths
This is so evident that a pair of glasses should not be a requirement: "...in path names...". This question, which seemingly already has an answer elsewhere, is about paths, whilst the other question is about whitespace in files. So it proves, that sometimes the asker (me :P) can read, while another user (who has been given the "super-power" privilege) has obviously only skimmed over the question, doing 5 things at the very same time, temporarily lacking the powers of focusing to one thing. (Some do seem to be lacking these powers very often, by the way. :P)
But, what is even more interesting, is that Gilles was the lone wolf to mark this question as "duplicate". Normally, there would be at least 3 true moderators (NOT privileged users, but elected moderators) thinking the same way. And, the way this whole system is structured, there is not even a way to discuss this with Gilles by writing him a private message. Discussing this on the question page would be inappropriate as well, so the privilege-less asker just has to live with the privileged user's capriciousness (or had I better even use a political term, despotism?)
Again: Since one, by design, cannot directly contact a "lone wolf" about why he made that decision (which may even be in error, mind you!), there should be a requirement of at least 3 (+1) votes from true moderators that a question may really be deemed duplicate. Otherwise, one lone wolf might easily misuse the powers he was given (just by amassing reputation, not by election, mind you!) and enjoy the way of letting his capriciousness reign all over the place.
"To err is human." And hence, it should not happen that said human may legitimately close a question in error, whilst other (elected) moderators would think otherwise (but were never asked in the first place).
What do you think?