 Rawls and other social contract theorists adopted a broad outcome metric for assessing the comparative advantage of the individual in a society: “social primary goods”, which include opportunities, basic liberties, income, and the social bases of self-respect. This breadth is intended to achieve neutrality between competing substantive conceptions of the good, since the social primary goods are construed as “all-purpose means” that are valuable to have irrespective of the content of one’s particular conception of the good. For many disability scholars, the difficulty in this approach does not concern its neutrality, but its failure to take account of the environment in which those goods must be utilized, which may profoundly affect their value to those receiving them. Two persons might be alike in their share of social primary goods, and have similar projects, aims, commitments, and values, but nonetheless differ in the value they can derive from those goods, if one person is disabled and the other is not. As we shall see below, the capabilities approach takes into account this objection, when the difference between the uses to which each person can put her primary goods is construed as the result of differences in “internal resources”, or the rate at which the individual can convert resources to “functionings”.