there’s nothing unusual about the simultaneous presence, within our minds, of a short-term sensitivity to surroundings and a long-term sense of direction. We live with these opposites every day. The psychologist Daniel Kahneman attributes this proficiency to an unconscious reliance on two kinds of thinking. “Fast” thinking is intuitive, impulsive, and often emotional. It produces, when needed, instant action: it’s what you do to keep from running into things, or to keep them from running into you. “Slow” thinking is
