  Powers and Faden view the well-being of the worst-off members of global society as the proper starting point for a practical theory of justice, but their theory can also be expressed as an argument from social beneficence. The sweep of global poverty and its impact on health and welfare is a major topic in the theories of Singer and Powers and Faden. The consequences of extreme poverty for health are well-documented, and these consequences inform Powers and Faden’s theories of both basic well-being and justice. Their theory also identifies unfair patterns of advantage and unfair relations of power such as subordination, exploitation, and social exclusion that are rooted in unjust social-structural conditions. Among other things, their theory assesses the degree to which institutional structures can be expected to fulfill the mandates of the theory.