"Paper"

Abstract:

Lewis (1983) offers an argument for adopting an objective distinction between natural and unnatural properties. He claims that with the addition of this distinction to his previous ontology—composed of possibilia and the iterative hierarchy of classes built up from them—he is now able to deal with several problems that his unamended ontology faced. Amongst these are what he calls "Putnam's Paradox" and Kripke's formulation of Wittgenstein's rule-following paradox (henceforth Rule-Following Paradox).