Many wish to believe that the odd is not so odd, the bizarre not so bizarre, and there is little changing of minds once they are set. There are only so many ways to understand the strange and disordered. The Greeks imagined gods to explain what they themselves could not. It is human nature to invent reasons for why the mind shatters, hope plummets, or the will to live dies. Scientific explanations are complicated and, for many, less humanly satisfying than visionary or religious ones. They are also less interesting than explanations based on planetary misalignment, toxins, or childhoods gone awry. There is a disturbing gap between what scientists and doctors know about mental illness and what most people believe.