I agree with Gil Kalai that some clarification might be needed here. Now that it is clear to me that Jacques Carette had an immediate motivation for this thread it seems obvious to me that he was unaware that might be able to vote by such a comment.
Yet, my impression of the situation is this (but I agree it is not very clear): there was a convention in palce about from mid 2010 to May 2011. Then it was declared obsolete and as such discontinued. (That I still respect such comment-votes is personal courtsey towards whoever might cast them.) In addition it was explained without any contradiction that nobody is under any obligation to adhere to this as it is only a convention (before it was declared obsolete).
For those unaware and for the rest for convenience, the main written record of said agreement is in this thread , the end seems most relevant as we are talking about the current situation. The reason that this thread became reactivated after being idle for about a year, was that in another thread a dicussion happened regarding some not following this, and then a discussion started whether this existed at all.
]]>Yet here the question to me is how should this work in practise. Of course one could keep a running count of close minus (not close) and if it is at least 5 the question gets closed; yet what if it reaches 5 and then drops to 4 should this reopen? Then alternating votes would one by one change the status of the question, which seems undesirable, and also would reauire more voting. Because then if I see something at 5 and want it closed I more or less need to vote to make it 6, and better 7 and so on. Yet if not then the precise timing of the votes would be important, which feels quite arbitray. (Indeed this is the situation with 'not close' comments; if I get it in at 4 it helps, if a minute later the question is already closed, the one vote won't reopen).
So, I think there is a good reason why the situation is as it is. (Still I personally respect not to close comments, even though the convention was as far as I understand discontinued.)
]]>If 5 more people think that the question should be closed than people think it should remain open, I think that that is indeed enough to close it. But right now, any 5 people can 'unilateraly' close a question, and it takes effort to re-open. This seems unbalanced.
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