Structural Pluralism

The chapter introduces and defends structural pluralism: the view that there is a plurality of ways of carving nature at the joints. The first part of the chapter argues that structural pluralism is able to meet a challenge to Ted Sider’s monism about joint-carving. The second part spells out the metaontological consequences of adopting structural pluralism, and shows that the view is compatible with a moderate form of deflationism about ontological disagreement. The third and last part fleshes out a number of consequences of adopting structural pluralism, and suggests further applications of that view, including a reassessment of an influential argument against vague existence.

Against ‘Against “Against Vague Existence”’

Alessandro Torza argues that Ted Sider’s Lewisian argument against vague existence is insufficient to rule out the possibility of what he calls ‘super-vague existence’, that is, the idea that existence is higher-order vague, for all orders. In this chapter it is argued that the possibility of super-vague existence is ineffective against the conclusion of Sider’s argument since super-vague existence cannot be consistently claimed to be a kind of linguistic vagueness. Torza’s idea of super-vague existence seems to be better suited to model vague existence under the assumption that vague existence is instead a form of ontic indeterminacy, contra what Ted Sider and David Lewis assume

Nonexistence, Vague Existence, Merely Possible Existence

This paper explores a new non-deflationary approach to the puzzle of nonexistence and its cousins. On this approach, we can, under a plausible assumption, express true de re propositions about certain objects that don’t exist, exist indeterminately or exist merely possibly. The defense involves two steps: First, to argue that if we can actually designate what individuates a nonexistent target object with respect to possible worlds in which that object does exist, then we can express a de re proposition about “it”. Second, to adapt the concept of outer truth with respect to a possible world – a concept familiar from actualist modal semantics – for use in representing the actual world.