The agency problem (or principal-agent problem) also manifests itself in the misalignment of interests in transactions: a vendor in a one-shot transaction does not have his interests aligned to yours—and so can hide stuff from you. But disincentive is not enough: the fool is a real thing. Some people do not know their own interest—just consider addicts, workaholics, people trapped in a bad relationship, people who support large government, the press, book reviewers, or respectable bureaucrats, all of whom for some mysterious reason act against their own interest. So there is this other
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