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TF Colloquium: Guido Bacciagaluppi (UU) Unscrambling Subjective and Epistemic Probabilities

When:We 03-04-2024 15:15 - 17:00
Where:Omega, Faculty of Philosophy

On Wednesday April 3rd at 15:15 in room Omega of the Faculty of
Philosophy, Guido Bacciagaluppi from Utrecht University will give a talk
in the TF colloquium entitled "Unscrambling Subjective and Epistemic
Probabilities". An abstract is included below.

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.

All are most cordially invited!

Jan-Willem Romeijn