You might have to work with people who believe the polar opposite to you on a given subject, and their opinion might win the day for reasons other than being correct. For example, a monomaniac, no matter how ignorant or even malicious, may "win out" eventually, because non-monomaniacs have better things to do than argue with them. It has been noted that this problem is not restricted to Wikipedia and frequently appears in many areas of human discourse.
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