 Welfare and the satisfaction of preferences may coincide because the satisfaction of preferences constitutes welfare or because people are self-interested and good judges of their own interests and hence prefer what is good for them. There are many obvious objections to the view that the satisfaction of preferences constitutes welfare. Preferences may be based on mistaken beliefs. People may prefer to sacrifice their own well-being for some purpose they value more highly. Preferences may reflect past manipulation or distorting psychological influences (Elster 1983). In addition, if preference satisfaction constitutes welfare, then policy makers can make people better off by molding their wants rather than by improving conditions. Furthermore, it seems unreasonable that social policy should attend to extravagant preferences. Rather than responding to these objections and attempting to defend the view that preference satisfaction constitutes well-being, economists can blunt these objections by taking preferences in circumstances where people are self-interested and good judges of their interests to be merely good evidence of what will promote welfare (Hausman and McPherson 2009, Hausman 2012). There are some exceptions, most notably Amartya Sen (1987a,b,c, 1992), but most economists take welfare to coincide with the satisfaction of preference.