Against Yagisawa's modal realism

Analysis 73 (1):10-17 (2013)

Authors
Mark Jago
Nottingham University
Abstract
In his book Worlds and Individuals, Possible and Otherwise (2010), Takashi Yagisawa presents and argues for a novel and imaginative version of modal realism. It differs both from Lewis’s modal realism (Lewis 1986) and from actualists’ ersatz accounts (Adams 1974; Sider 2002). In this paper, I’ll present two arguments, each of which shows that Yagisawa’s metaphysics is incoherent. The first argument shows that the combination of Yagisawa’s metaphysics with impossibilia leads to triviality: every sentence whatsoever comes out true. This is so even if Yagisawa accepts a paraconsistent notion of logical consequence, on which contradictions do not entail arbitrary conclusions. The second argument is independent of Yagisawa’s acceptance of impossibilia. It shows that Yagisawa’s metaphysics of possible worlds is incoherent. Using ordinary modal reasoning, I derive a contradiction from Yagisawa’s account of possible worlds.
Keywords Modal realism  Yagisawa  Impossible worlds  Possible worlds
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DOI 10.1093/analys/ans132
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References found in this work BETA

Four Dimensionalism: An Ontology of Persistence and Time.Theodore Sider - 2004 - Philosophy and Phenomenological Research 68 (3):642-647.
On the Plurality of Worlds.David Lewis - 1986 - Revue Philosophique de la France Et de l'Etranger 178 (3):388-390.
Modal Realism with Overlap.Kris McDaniel - 2004 - Australasian Journal of Philosophy 82 (1):137.

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Citations of this work BETA

Impossible Worlds.Mark Jago - 2013 - Noûs 47 (3):713-728.
Hyperintensional Propositions.Mark Jago - 2015 - Synthese 192 (3):585-601.
Are Impossible Worlds Trivial?Mark Jago - 2013 - In Vit Puncochar & Petr Svarny (eds.), The Logica Yearbook 2012. College Publications.
Extended Modal Dimensionalism.Martin Vacek - 2017 - Acta Analytica 32 (1):13-28.
Impossibilia and Modally Tensed Predication.Takashi Yagisawa - 2015 - Acta Analytica 30 (4):317-323.

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