Abstract

In constructivist contractualist theories, such as Rawls’, principles of justice should mirror beliefs that we all, in some sense, share. One would then arrive at principles that everybody could, in that sense, accept. These principles should specify, among other things, to whom to distribute the relevant benefits and burdens and to whom to assign responsibility for the distribution. In addition to this classical assignment problem, however, constructivist contractualism must also deal with a new, and quite different, assignment problem sincewhat to count as beliefs that weall share depends on how the set of people that make up the “we” is delimited. Thus, for constructivist contractualism, the questions of whom to assign a part in the justification procedure and whom to exclude, and how to justify these inclusions and exclusions, are of crucial importance. In this chapter we consider the inclusion or exclusion of future generations, and how this case illuminates a general problem for constructivist contractualism.