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The Worlds of PossibilityModal Realism and the Semantics of Modal Logic$
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Charles S. Chihara

Print publication date: 2001

Print ISBN-13: 9780199246557

Published to Oxford Scholarship Online: October 2011

DOI: 10.1093/acprof:oso/9780199246557.001.0001

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Modality without Worlds I

Modality without Worlds I

The Semantics of Modal Sentential Logic

Chapter:
(p.197) 6 Modality without Worlds I
Source:
The Worlds of Possibility
Author(s):

Charles S. Chihara

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780199246557.003.0007

It is worth reviewing, at this point, the argument for Modal Realism that was given in the Introduction. There, it was argued that philosophers who eschew including possible worlds in their ontology are thus precluded from making use of possible worlds semantics in their assessments of the validity and invalidity of modal arguments, and in their explanations and analyses of modal reasoning. As seen in previous chapters, for many Modal Realists, this is too high a price to pay for ontological economy. In response to this argument, this chapter puts forward an account of modal logic that can be used both in the assessments of the validity and invalidity of modal arguments and also in the explanations and analyses of modal reasoning.

Keywords:   Modal Realism, possible worlds, semantics, modal arguments, modal reasoning, sentential calculus, C-sequences

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