Defending the Possibility of Knowledge
Author(s)
Kennedy, Neil
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In this paper, I propose a solution to Fitch’s paradox that draws on ideas from Edgington (Mind 94:557–568, 1985), Rabinowicz and Segerberg (1994) and Kvanvig (Noûs 29:481–500, 1995). After examining the solution strategies of these authors, I will defend the view, initially proposed by Kvanvig, according to which the derivation of the paradox violates a crucial constraint on quantifier instantiation. The constraint states that non-rigid expressions cannot be substituted into modal positions. We will introduce a slightly modified syntax and semantics that will help underline this point. Furthermore, we will prove results about the consistency of verificationism and the principle of non-omniscience by model-theoretical means. Namely, we prove there exists a model of these principles, and delineate certain constraints they pose on a structure in which they are true.
Date issued
2013-05Department
Massachusetts Institute of Technology. Department of Linguistics and PhilosophyJournal
Journal of Philosophical Logic
Publisher
Springer Netherlands
Citation
Kennedy, Neil. “Defending the Possibility of Knowledge.” Journal of Philosophical Logic 43, no. 2–3 (May 5, 2013): 579–601.
Version: Author's final manuscript
ISSN
0022-3611
1573-0433