Philosophical Studies 160 (3):345-363 (2012)

Authors
Dustin Locke
Claremont McKenna College
Abstract
Structuralism and quidditism are competing views of the metaphysics of property individuation: structuralists claim that properties are individuated by their nomological roles; quidditists claim that they are individuated by something else. This paper (1) refutes what many see as the best reason to accept structuralism over quidditism and (2) offers a methodological argument in favor of a quidditism. The standard charge against quidditism is that it commits us to something ontologically otiose: intrinsic aspects of properties, so-called ‘quiddities’. Here I grant that quiddities are ontologically otiose, but deny that quidditism requires them. According to a view I call ‘austere quidditism’, properties are individuated by bare numerical identity. I argue that, as far as ontological parsimony is concerned, austere quidditism and structuralism are on a par. But is austere quidditism a coherent alternative to structuralism? To see that it is, we must get clear on what exactly we mean by ‘property individuation’. What we discover is that structuralism is a counterpart theory for properties, and that austere quidditism is simply the rejection of counterpart theory. I conclude with a methodological argument to the effect that counterpart theory for properties ought to be rejected. This paper begins by situating the debate between structuralists and quidditists within the context of a debate over the epistemic limits of fundamental science. At the center of this debate is David Lewis’s posthumously published ‘Ramseyan Humility’ (2008). In the appendix I explain the precise role of austere quidditism in Lewis’s argument.
Keywords Properties  Quidditism  Structuralism  Quiddistic skepticism  Counterpart theory  Nomological roles
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DOI 10.1007/s11098-011-9722-5
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References found in this work BETA

On the Plurality of Worlds.David Lewis - 1986 - Wiley-Blackwell.
A World of States of Affairs.D. M. Armstrong - 1996 - Cambridge University Press.
On the Plurality of Worlds.David Lewis - 1986 - Revue Philosophique de la France Et de l'Etranger 178 (3):388-390.
Attitudes de Dicto and de Se.David Lewis - 1979 - Philosophical Review 88 (4):513-543.

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Citations of this work BETA

Properties.Francesco Orilia & Michele Paolini Paoletti - 2020 - Stanford Encyclopedia of Philosophy.
Sophistication About Symmetries.Neil Dewar - 2019 - British Journal for the Philosophy of Science 70 (2):485-521.
Powerful Qualities and Pure Powers.Henry Taylor - 2018 - Philosophical Studies 175 (6):1423-1440.
Grounding Theories of Powers.Matthew Tugby - 2021 - Synthese 198 (12):11187-11216.
Powerful Qualities or Pure Powers?Gabriele Contessa - 2019 - Metaphysica 20 (1):5-33.

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