Bacciagaluppi, Guido (2019) Unscrambling Subjective and Epistemic Probabilities. [Preprint]
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Abstract
There are two notions in the philosophy of probability that are often used interchangeably: that of subjective probabilities and that of epistemic probabilities. This paper suggests they should be kept apart. Specifically, it suggests that the distinction between subjective and objective probabilities refers to what probabilities are, while the distinction between epistemic and ontic probabilities refers to what probabilities are about. After arguing that there are bona fide examples of subjective ontic probabilities and of epistemic objective probabilities, I propose a systematic way of drawing these distinctions in order to take this into account. In doing so, I modify Lewis's notion of chances, and extend his Principal Principle in what I argue is a very natural way (which in fact makes chances fundamentally conditional). I conclude with some remarks on time symmetry, on the quantum state, and with some more general remarks about how this proposal
fits into an overall Humean (but not quite neo-Humean) framework.
[To appear in: O. Shenker and M. Hemmo (eds.), Quantum, Probability, Logic - Itamar Pitowski's Work and Influence (Springer).]
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| Item Type: | Preprint | ||||||
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| Keywords: | subjective probabilities, objective probabilities, epistemic probabilities, ontic probabilities, Principal Principle, quantum state | ||||||
| Subjects: | Specific Sciences > Probability/Statistics Specific Sciences > Physics > Quantum Mechanics |
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| Depositing User: | Guido Bacciagaluppi | ||||||
| Date Deposited: | 31 Aug 2019 22:55 | ||||||
| Last Modified: | 31 Aug 2019 22:55 | ||||||
| Item ID: | 16393 | ||||||
| Subjects: | Specific Sciences > Probability/Statistics Specific Sciences > Physics > Quantum Mechanics |
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| Date: | 15 July 2019 | ||||||
| URI: | https://philsci-archive.pitt.edu/id/eprint/16393 |
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