In their book Nudge, Richard Thaler and Cass Sunstein, professors at the University of Chicago and Harvard Law School, document at length how an awareness of the flaws in our brains can be used to improve our lives. They define a nudge as “any aspect of the choice architecture that alters people’s behavior in a predictable way without forbidding any options or significantly changing their economic incentives.… To count as a mere nudge, the intervention must be easy and cheap to avoid. Nudges are not mandates. Putting the fruit at eye level counts as a nudge. Banning junk food does not.”209
