"I think that the fact that a theory so vague, so insufficiently verifiable, and so far from the criteria otherwise applied in "hard" science, could become a dogma, can be explained only on sociological grounds."

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One way of looking at Impossibility Theorem is that we proposed some criteria for what a good system should be: what is it you want from a voting system, and impose some conditions. And then ask: can you have a voting system that guarantees that?

— Kenneth Arrow