Simple changes that encourage, but don’t mandate, behaviors we would like to see have been called “nudges.” In their book with that title, Cass Sunstein and Richard Thaler offer a handful of policy examples, ranging from the serious (a plan that improves employee retirement-savings rates) to the less serious but equally effective (painting a fly on urinals has been shown to reduce urinal spillage by 80 percent). For his work in helping launch the field of behavioral economics, Thaler was awarded the 2017 Nobel Prize.
