Conservative deflationism?

Philosophical Studies 177 (2):535-549 (2020)
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Abstract

Deflationists argue that ‘true’ is merely a logico-linguistic device for expressing blind ascriptions and infinite generalisations. For this reason, some authors have argued that deflationary truth must be conservative, i.e. that a deflationary theory of truth for a theory S must not entail sentences in S’s language that are not already entailed by S. However, it has been forcefully argued that any adequate theory of truth for S must be non-conservative and that, for this reason, truth cannot be deflationary :493–521, 1998; Ketland in Mind 108:69–94, 1999). We consider two defences of conservative deflationism, respectively proposed by Waxman :429–463, 2017) and Tennant :551–582, 2002), and argue that they are both unsuccessful. In Waxman’s hands, deflationists are committed either to a non-purely expressive notion of truth, or to a conception of mathematics that does not allow them to justifiably exclude non-conservative theories of truth. Tennant’s conservative deflationism fares no better: if deflationist truth must be conservative over arithmetic, it can be shown to collapse into a non-conservative variety of deflationism.

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Author Profiles

Julien Murzi
University of Salzburg
Lorenzo Rossi
Università di Torino

Citations of this work

Nothing Is True.Will Gamester - 2023 - Journal of Philosophy 120 (6):314-338.
Deflationism and the Function of Truth.Lavinia Picollo & Thomas Schindler - 2018 - Philosophical Perspectives 32 (1):326-351.
Deflationism about Truth.Bradley Armour-Garb, Daniel Stoljar & James Woodbridge - 2021 - Stanford Encyclopedia of Philosophy.

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References found in this work

Logic, semantics, metamathematics.Alfred Tarski - 1956 - Oxford,: Clarendon Press. Edited by John Corcoran & J. H. Woodger.
The taming of the true.Neil Tennant - 1997 - New York: Oxford University Press.
Logic, Logic and Logic.George Boolos & Richard C. Jeffrey - 1998 - Studia Logica 66 (3):428-432.

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