The devil is in the categories: Metaphysics and social and political thought

It is often assumed that social and political thought have nothing to do with issues of concern to metaphysicians. I have referred to this assumption in the past as The Myth of Metaphysical Neutrality. I argue here that social and political theories have metaphysical positions built into them, such that to adopt a given social or political account commits one to that theory's implicit metaphysics -- and, conversely, that commitment to a given metaphysical position will preclude adopting social or political accounts that are at odds with it. I look first at the issue of emergence, showing that key concepts employed by Aristotle, Rousseau and Marx, respectively, require a belief that wholes do not reduce to their parts. I then turn to Marx's account of alienation, arguing that it presupposes a belief in agent-causal free will.