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Shakespeare's Free Lunch: A Critique of the D-CTC Solution to the Knowledge Paradox

Dunlap, Lucas (2016) Shakespeare's Free Lunch: A Critique of the D-CTC Solution to the Knowledge Paradox. [Preprint]

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Abstract

In this paper I argue that the consistency condition from the Deutsch's influential model for closed timelike curves (CTCs) differs significantly from the classical consistency condition found in Lewis (1976) and Novikov (2002), as well as from the consistency condition found in the P-CTC model, the major rival to Deutsch's approach. Both the CCC and the P-CTC consistency condition are formulable in the context of a single history of the world. Deutsch's consistency condition relies on the existence of a structure of parallel worlds. I argue that Deutsch's commitment to realism about parallel worlds puts his solutions to the information paradox in jeopardy. I argue that, because of Deutsch's commitment to this metaphysical picture, he is committed to the existence of physical situations that are in every way indistinguishable from the paradoxes he attempts to rule out by adopting the model in the first place. Deutsch's proposed solution to the Knowledge Paradox, in particular his commitment to the actuality of the many worlds of the Everett interpretation (on which he relies to solve the paradoxes), guarantees the existence of worlds that are indistinguishable from worlds in which the genuine Knowledge Paradox arises.


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Item Type: Preprint
Creators:
CreatorsEmailORCID
Dunlap, Lucasldunlap@uwo.ca
Keywords: time travel paradox, closed timelike curve, quantum mechanics
Subjects: General Issues > Scientific Metaphysics
Specific Sciences > Computation/Information > Quantum
Specific Sciences > Physics > Quantum Mechanics
Depositing User: Dr. Lucas Dunlap
Date Deposited: 10 Feb 2017 17:02
Last Modified: 10 Feb 2017 17:02
Item ID: 12811
Subjects: General Issues > Scientific Metaphysics
Specific Sciences > Computation/Information > Quantum
Specific Sciences > Physics > Quantum Mechanics
Date: 2016
URI: https://philsci-archive.pitt.edu/id/eprint/12811

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