Abstract

In Part III of Anarchy, State, and Utopia (1974), Robert Nozick presents what he calls ‘the model of possible worlds’ (307) to examine the formal properties of utopia, defined as ‘the best of all possible worlds’ (298). The basic idea is that each person is given the power to create any possible world and its inhabitants by imagining them. Two definitions of stability have been proposed: (a) the non-circular definition according to which a world is stable if and only if nobody can imagine a better world and (b) the circular definition according to which a world is stable if and only if nobody can imagine a better world that is also stable. In this paper, we prove four theorems (namely, the indeterminacy theorem, the stable dystopia theorem, the nobody’s utopia theorem and the redundancy theorem) that provide us with decisive reasons to reject the circular definition and opt for the non-circular definition of stability to analyse Nozick’s theory of utopia.