Everettian confirmation and sleeping beauty

Alastair Wilson

Research output: Contribution to journalArticleResearchpeer-review

3 Citations (Scopus)


Darren Bradley has recently appealed to observation selection effects to argue that conditionalization presents no special problem for Everettian quantum mechanics, and to defend the halfer answer to the puzzle of Sleeping Beauty. I assess Bradley s arguments and conclude that while he is right about confirmation in Everettian quantum mechanics, he is wrong about Sleeping Beauty. This result is doubly good news for Everettians: they can endorse Bayesian confirmation theory without qualification, but they are not thereby compelled to adopt the unpopular halfer answer in Sleeping Beauty. These considerations suggest that objective chance is playing an important and under-appreciated role in Sleeping Beauty. 1 Introduction 2 Confirmation in Everettian Quantum Mechanics 3 Sleeping Beauty 4 The Selection Model 5 Bradley s Argument 6 The Right Route to 1/3 7 The Breakdown of the Analogy 8 Alternative Diagnoses 9 God s Gambling Game 10 Non-chancy Sleeping Beauty Cases 11 Conclusion.
Original languageEnglish
Pages (from-to)573 - 598
Number of pages26
JournalBritish Journal for the Philosophy of Science
Issue number3
Publication statusPublished - 2014

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