“In a stroke, twenty-one-year-old Danny Kahneman had exerted more influence upon the Israeli army—the institution on which the society depended for its survival—than any psychologist had ever done or ever would do. The obvious next step for him was to go off and get his PhD and become Israel’s leading expert in personality assessment and selection processes. Harvard was home to some of the leading figures in the field, but Danny decided, without anyone’s help, that he wasn’t bright enough to go to Harvard—and didn’t bother to apply. Instead he went to Berkeley.”