
Contents
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11.1 The Indifference Principle 11.1 The Indifference Principle
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11.1.1 Elga's argument 11.1.1 Elga's argument
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11.1.2 CLF and Duplication 11.1.2 CLF and Duplication
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11.1.3 Colored papers overdrive 11.1.3 Colored papers overdrive
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11.1.4 Weatherson's objections 11.1.4 Weatherson's objections
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11.2 Fission and cloning 11.2 Fission and cloning
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11.2.1 Fission and diachronic consistency 11.2.1 Fission and diachronic consistency
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11.2.2 Three metaphysical accounts 11.2.2 Three metaphysical accounts
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11.2.3 Cloning 11.2.3 Cloning
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11.3 Quantum mechanics 11.3 Quantum mechanics
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11.3.1 Everettian interpretations 11.3.1 Everettian interpretations
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11.3.2 Everett and Bayes 11.3.2 Everett and Bayes
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11.3.3 Solutions 11.3.3 Solutions
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11 11 Indifference principles and quantum mechanics
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Published:December 2012
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Abstract
Adam Elga argues that in certain cases when an agent cannot tell which of many subjectively indistinguishable experiences she is currently having, she should assign equal credence to being in each. This chapter derives instances of that indifference principle from the Certainty-Loss Framework (CLF) proposed and defended in this book, then defends those instances against criticisms from Brian Weatherson. Next, the chapter applies CLF to cases involving personal fission or cloning. Finally, the chapter uses CLF to examine how agents should assign degrees of belief to the outcomes of various quantum experiments if the Everett interpretation of quantum mechanics is true. If the Everettian interpretation can make sense of nonextreme degrees of belief about quantum outcomes to begin with, then CLF provides plausible results about how those degrees of belief should update over time.
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