 There are many ways to think about well-being, and the prevailing view among economists has shifted from hedonism (which takes the good to be a mental state such as pleasure or happiness) to the view that welfare should be measured by the satisfaction of preferences. A number of prominent economists are currently arguing for a return to hedonism, but they remain a minority. (See Bavetta et al. 2014. Clark Flèche 2018, Dolan and Kahneman 2014, Frey 2010, 2018, Frey and Stutzer 2001, Kahneman 1999, 2000a, 2000b, Kahneman and Krueger 2006, Kahneman and Sugden 2005, Kahneman and Thaler 2006, Layard 2006, Ormerod 2008, Radcliff 2013, Weimann and Knabe 2015 and for criticism Davies 2015, Etzioni 2018, and Hausman 2010.) Unlike hedonism, taking welfare to be preference satisfaction specifies how to find out what is good for a person rather than committing itself to any substantive view of a person’s good. Note that equating welfare with the satisfaction of preferences is not equating welfare with any feeling of satisfaction. If welfare can be measured by the satisfaction of preferences, then a person is better off if what he or she prefers comes to pass, regardless of whether that occurrence makes the agent feel satisfied.