A New Grandfather Paradox?
Sider (Ted)
Source: Philosophy and Phenomenological Research, Mr 97; 57(1): 139-144
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Philosophers Index Abstract

    In a 1994 Scientific American article, physicist David Deutsch and philosopher Michael Lockwood give a defense of the possibility of time travel1 based on the "Many Worlds" interpretation of quantum mechanics. They motivate their appeal to the "Many Worlds" interpretation arguing that the standard formulation of the paradox of time travel2 in terms of ability is misguided, presenting their own version of the paradox based on "autonomy principle," and arguing that this paradox should be resolved by appeal to the "Many Worlds" interpretation. But whatever the merits of their solution, it is unmotivated, for their new version of the paradox turns out on closer scrutiny to be nothing more than the original ability version of the paradox in disguise.

Comment:

See Sider - A New Grandfather Paradox?.

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