Constraints on data in worlds with closed timelike curves

Philosophy of Science 74 (5):724–735 (2007)
It is claimed that unacceptable constraints on initial data are imposed by certain responses to paradoxes that threaten time travel, closed timelike curves (CTCs) and other backwards causation hypotheses. In this paper I argue against the following claims: to say “contradictions are impossible so something must prevent the paradox” commits in general to constraints on initial data, that for fixed point dynamics so-called grey state solutions explain why contradictions do not arise, and the latter have been proved to avoid constraints on initial data. †To contact the author, please write to: Philosophy, University of Queensland, Brisbane, Queensland 4072, Australia; e-mail:
Keywords 440106 Logic  C1  440107 Metaphysics  780101 Mathematical sciences
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DOI 10.1086/525617
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References found in this work BETA
The Paradoxes of Time Travel.David Lewis - 1976 - American Philosophical Quarterly 13 (2):145-152.
Bananas Enough for Time Travel?Nicholas J. J. Smith - 1997 - British Journal for the Philosophy of Science 48 (3):363-389.
Time Travel, Coincidences and Counterfactuals.Theodore Sider - 2002 - Philosophical Studies 110 (2):115 - 138.
The Coincidences of Time Travel.Phil Dowe - 2003 - Philosophy of Science 70 (3):574-589.

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