F. Scott Fitzgerald said, “The test of a first-rate intelligence is the ability to hold two opposed ideas in the mind at the same time, and still retain the ability to function.” If that’s so, then it may be that all of us regularly exhibit a first-rate intelligence. It appears we often believe things we know are not true. In “Believing What You Don’t Believe,” behavioral scientists Jane L. Risen and A. David Nussbaum explain that “people can simultaneously recognize that, rationally, their superstitious belief is impossible, but persist in their belief, and their behavior, regardless.” Detecting a mistake in our thinking does not always mean we will fix the mistake.