The capability approach often provides one element in the development of an account of justice, social progress, development, or something else. For example, Crocker (2008) has extended the capability approach with accounts of agency and participation into a more detailed account of development ethics, but discusses at length that not all versions of the capability approach are embracing agency so explicitly. Similarly, the capability approach can be developed into an alternative evaluative tool that can replace traditional social cost-benefit analysis (Alkire 2002). Or it can be used as a normative framework within which to evaluate and design policies and social institutions, ranging from welfare-state design in relatively affluent societies (Wolff and de-Shalit 2007), to governmental and nongovernmental development policies in poor countries, to policies that affluent countries and international institutions employ (or are advised to employ) in their efforts to aid poor countries, such as the UNDP’s Human Development Reports. 