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And, pray tell, what is the problem you are trying to solve?

Users should have some qualification to have the right to vote.

This may be high iq, knowlege of the submission topic, etc.

I dont think that is a metric easily measured - and I am convinced your solution doesnt measure it much, depending on the context.

So if a maths question was asked including complex mathematics then, yes, it would probably work. But many questions are just not that specialist!