David and Goliath: Underdogs, Misfits, and the Art of Battling Giants

by Malcolm Gladwell

“Across many domains of psychology, one finds that X increases Y to a point, and then it decreases Y.…There is no such thing as an unmitigated good. All positive traits, states, and experiences have costs that at high levels may begin to outweigh their benefits.”

This is called the “principle of legitimacy,” and legitimacy is based on three things. First of all, the people who are asked to obey authority have to feel like they have a voice—that if they speak up, they will be heard. Second, the law has to be predictable. There has to be a reasonable expectation that the rules tomorrow are going to be roughly the same as the rules today. And third, the authority has to be fair. It can’t treat one group differently from another.

The excessive use of force creates legitimacy problems, and force without legitimacy leads to defiance, not submission.