Individual differences should be celebrated, but in the face of strong, common situational forces, individual differences shrink and are compressed. In such instances, behavioral scientists can predict what the majority of people will do knowing nothing about the particular people who comprise a group, only the nature of their behavioral context. It should be clear that not even the best psychology can predict how each and every individual will behave in a given situation; some degree of individual variance always exists that cannot be accounted for. Therefore, you may reject the lessons that we are about to learn as inapplicable to yourself; you are the special case, the special end of the tail of the normal distribution. However, know that you do so at the cost of being caught with your defenses down and your tail twisted.
– Philip Zimbardo, The Lucifer Effect: How Good People Turn Evil (2007)