To learn about his own mind-reading abilities, Johnson takes a famous test devised by the British psychologist Simon Baron-Cohen. In the test, you are shown a series of 36 different pairs of eyes on a computer screen. Each pair has a distinctive expression. For each, you have to choose one adjective from a set of four that Baron-Cohen provides: Is this pair of eyes despondent, 6 preoccupied, cautious, or regretful? Johnson finds that he has an instant gut reaction to each pair of eyes. But when he looks harder, he feels less and less sure what he sees.