Believing you’re good at something just because you do it—without any information that you’re doing it well—is indeed irrational. - Robyn Dawes

Unfortunately, there are many irrational conclusions and beliefs in our culture from which to choose. Those analyzed at some length—and as precisely as possible—are those with which I am most familiar. With public opinion polls indicating that more people in the United States believe in extrasensory perception than in evolution, it is not surprising that examples abound.

What causes the lunatic to demand that ideas not be subject to scrutiny—and in particular that they not be contradicted? No one knows. It may be part of a deliberate campaign to maintain power, an implicit admission of some semiconscious fear that the ideas might not be good, or just a common aspect of types of behavior that we associate with historical monsters. At least, the correlation is there.

Again, irrationality can hurt, and here we have evidence that a particular form of it is widespread. The people accused around hurt, and the clients—be they children or grown adults—are hurt. Irrationality is not simply an amusing diversion provided by tarot cards or Ouija boards.