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Quantum metametaphysics

Torza, Alessandro (2021) Quantum metametaphysics. Synthese. ISSN 1573-0964

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Say that metaphysical indeterminacy occurs just when there is a fact such that neither it nor its negation obtains. The aim of this work is to shed light on the issue of whether orthodox quantum mechanics provides any evidence of metaphysical indeterminacy by discussing the logical, semantic, and broadly methodological presuppositions of the debate. I argue that the dispute amounts to a verbal disagreement between classical and quantum logicians, given Eli Hirsch’s account of substantivity; but that it need not be so if Ted Sider’s naturalness-based account of substantivity is adopted instead. Given the latter approach, can anything be said in order to tip the balance of the dispute either way? Some prima facie reasonable constraints on naturalness entail that the classicist is right, and the quantum world is therefore determinate. Nevertheless, there are reasons for weakening those constraints, to the effect that the dispute remains very much open. Finally, I discuss alternative accounts of metaphysical indeterminacy, and argue that they are unsuitable for framing the quantum indeterminacy debate.

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Item Type: Published Article or Volume
Torza, Alessandro0000-0003-2474-4365
Keywords: Disagreement; Metaphysical indeterminacy; Quantum indeterminacy; Quantum logic; Nonclassical logic; Natural properties
Subjects: Specific Sciences > Mathematics > Logic
Specific Sciences > Physics > Quantum Mechanics
Depositing User: Alessandro Torza
Date Deposited: 13 Aug 2021 16:44
Last Modified: 13 Aug 2021 16:44
Item ID: 19439
Journal or Publication Title: Synthese
Publisher: Springer (Springer Science+Business Media B.V.)
Official URL:
DOI or Unique Handle: 10.1007/s11229-021-03226-0
Subjects: Specific Sciences > Mathematics > Logic
Specific Sciences > Physics > Quantum Mechanics
Date: 2021
ISSN: 1573-0964

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