There are few things quite so mis-understood by humans as their own psyche and behaviours. A few examples of our distortions from reality include concepts such as the existence of 'good and evil' people, or of a human having a distinctly separate 'mind and body' and hence having separate 'mental' and 'physical' health. Such old superstitions are still passed around human cultures today, even decades after evidence that shows them to be irrelevant has passed from the cutting edge of science.