 A further serious difficulty for traditional welfare economics, which has been as it were hiding in plain sight, is the fact that choices are imperfect indicators of preferences, which are in turn imperfect indicators of what enhances well-being. The same facts that show that preference satisfaction does not constitute well-being (false beliefs, lack of information, other-directed and non-rational preferences) show that choices and preferences are sometimes misleading indicators of well-being. Moreover, once one recognizes that preferences are good indicators of welfare only if agents are good judges of what will benefit them, one is bound to recognize that agents are not always good judges of what will benefit themselves, even when they have all the information they need. In some contexts, these problems may be minor. For example, people’s preferences among new automobiles are largely self-interested, thoughtful, and well-informed. In other contexts, such as environmental protection, preferences for ignoring the problems are often badly informed, while preferences to take action are typically not self-interested. Either way, popular preferences among policies to address environmental problems are unlikely to be a good guide to welfare.