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Very intelligent people often make the mistake of assuming that other people's minds work in the same way as theirs do. Economists, for example, create mathematically-based models on the notion that people act rationally as far as their own economic interests are concerned. You don't have to look much further than family and friends to see how off the mark this idea is. The problem with a lot of such scientifically-based theories is that they are not friendly to facts that don't fit the case.