Patrick Allo
Vrije Universiteit Brussel
The starting point of this paper is a version of intra-theoretical pluralism that was recently proposed by Hjortland [2013]. In a first move, I use synonymy-relations to formulate an intuitively compelling objection against Hjortland's claim that, if one uses a single calculus to characterise the consequence relations of the paraconsistent logic LP and the paracomplete logic K3, one immediately obtains multiple consequence relations for a single language and hence a reply to the Quinean charge of meaning variance. In a second move, I explain how a natural generalisation of the notion of synonymy can be used to counter this objection, but I also show how the solution can be turned into an equally devastating ‘one logic after all’ type of objection. Finally, I propose the general diagnosis that these problems could only arise in the presence of conceptual distinctions that are too coarse to accommodate coherent pluralist theses. T..
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DOI 10.1080/00048402.2014.930498
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References found in this work BETA

Philosophy of Logic.W. V. Quine - 1970 - Harvard University Press.
The Logical Syntax of Language.Rudolf Carnap - 1937 - London: K. Paul, Trench, Trubner & Co..
Logical Pluralism.Jc Beall & Greg Restall - 2005 - Oxford, England: Oxford University Press.
Logical Pluralism.Jc Beall & Greg Restall - 2000 - Australasian Journal of Philosophy 78 (4):475 – 493.
On the Logic of Demonstratives.David Kaplan - 1979 - Journal of Philosophical Logic 8 (1):81 - 98.

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Citations of this work BETA

Disagreement About Logic From a Pluralist Perspective.Erik Stei - 2020 - Philosophical Studies 177 (11):3329-3350.
A Constructionist Philosophy of Logic.Patrick Allo - 2017 - Minds and Machines 27 (3):545-564.

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