 Every economic analysis of law provides some substantive content to each agent’s preference ranking. Typically, the analyst attributes self-interested preferences to each agent. The agent ranks consequences solely on the basis of their effect on her. In the standard market model, for example, the agent cares only about her own consumption not the consumption of others. In the standard economic model of accident law, she cares only about injuries to herself and costs that she may incur; she pays no attention to injuries to others or costs that others incur. 