Real world theory, complacency, and aspiration

Just how realistic about human nature and real possibilities must a theory of justice, or a moral theory, more generally, be? Lines have been drawn, with some (e.g. John Rawls) holding that idealizing away from reality is indispensable and others maintaining that utopian thinking is not just useless but irrelevant. In Utopophobia David Estlund defends the value of utopian theory. At his most modest, Estlund claims that it is a legitimate approach, not ruled out of court by anti-idealists on entirely inadequate grounds—merely “by assumption or definition” as he puts it (hence the “phobia” charge). Yet he also argues against what we call real world theory, which takes account of human imperfection and feasible options. It invites complacency and undermines aspiration, he argues, and he accepts Rawls’ claim that it will of necessity be unsystematic, thanks to its realism. We accept that the utopian approach is neither useless nor irrelevant. Yet we press hard against the charges against real world theory, maintaining that, properly understood, it invites neither complacency nor aspiration and can perfectly well offer a systematic and principled account of normative concepts, including justice specifically.