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i find the "revealed preference" people really annoying. anyone who has ever been addicted to anything knows that habit forming ness can be completely disentangled from enjoyability.
you usually don't know what options other people are actually choosing from -- what are their abilities, resources, knowledge; what other costs or side effects would the choices have on their lives -- so it is possible to be arbitrarily wrong.
famously, Marie Antoinette observed that her subjects had a revealed preference for starving over eating cake.