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Vagueness And The Logic Of The World, Zack Garrett

Department of Philosophy: Dissertations, Theses, and Student Research

In this dissertation, I argue that vagueness is a metaphysical phenomenon---that properties and objects can be vague---and propose a trivalent theory of vagueness meant to account for the vagueness in the world. In the first half, I argue against the theories that preserve classical logic. These theories include epistemicism, contextualism, and semantic nihilism. My objections to these theories are independent of considerations of the possibility that vagueness is a metaphysical phenomenon. However, I also argue that these theories are not capable of accommodating metaphysical vagueness.

As I move into my positive theory, I first argue for the possibility of metaphysical …