David Bourget (Western Ontario)
David Chalmers (ANU, NYU)
Rafael De Clercq
Ezio Di Nucci
Jonathan Jenkins Ichikawa
Jack Alan Reynolds
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British Journal for the Philosophy of Science 59 (3):293-305 (2008)
Following Lewis, it is widely held that branching worlds differ in important ways from diverging worlds. There is, however, a simple and natural semantics under which ordinary sentences uttered in branching worlds have much the same truth values as they conventionally have in diverging worlds. Under this semantics, whether branching or diverging, speakers cannot say in advance which branch or world is theirs. They are uncertain as to the outcome. This same semantics ensures the truth of utterances typically made about quantum mechanical contingencies, including statements of uncertainty, if the Everett interpretation of quantum mechanics is true. The ‘incoherence problem’ of the Everett interpretation, that it can give no meaning to the notion of uncertainty, is thereby solved. IntroductionMetaphysicsPersonal fissionBranching worldsPhysicsObjections
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References found in this work BETA
Hilary Greaves (2004). Understanding Deutsch's Probability in a Deterministic Universe. Studies in History and Philosophy of Modern Physics 35 (3):423-456.
David Wallace (2003). Everett and Structure. Studies in History and Philosophy of Science Part B 34 (1):87-105.
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Citations of this work BETA
Charles T. Sebens & Sean M. Carroll (forthcoming). Self-Locating Uncertainty and the Origin of Probability in Everettian Quantum Mechanics. British Journal for the Philosophy of Science:axw004.
V. Allori, S. Goldstein, R. Tumulka & N. Zanghi (2011). Many Worlds and Schrodinger's First Quantum Theory. British Journal for the Philosophy of Science 62 (1):1-27.
A. Wilson (2012). Objective Probability in Everettian Quantum Mechanics. British Journal for the Philosophy of Science 64 (4):709-737.
Paul Tappenden (2011). Evidence and Uncertainty in Everett's Multiverse. British Journal for the Philosophy of Science 62 (1):99-123.
Wolfgang Schwarz (2015). Belief Update Across Fission. British Journal for the Philosophy of Science 66 (3):659-682.
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Jiri Benovsky (2005). Branching Versus Divergent Possible Worlds. Kriterion: Journal of Philosophy 19 (1):12-20.
Peter J. Lewis (2007). Uncertainty and Probability for Branching Selves. Studies in History and Philosophy of Science Part B 38 (1):1-14.
N. Belnap & T. Muller (2010). Branching with Uncertain Semantics: Discussion Note on Saunders and Wallace, 'Branching and Uncertainty'. British Journal for the Philosophy of Science 61 (3):681-696.
Alastair Wilson (2012). Everettian Quantum Mechanics Without Branching Time. Synthese 188 (1):67-84.
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