Epistemic Risk And The Demands Of Rationality

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Epistemic Risk and the Demands of Rationality

Epistemic Risk and the Demands of Rationality
Author :
Publisher : Oxford University Press
Total Pages : 224
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ISBN-10 : 9780192864352
ISBN-13 : 0192864351
Rating : 4/5 (351 Downloads)

Book Synopsis Epistemic Risk and the Demands of Rationality by : Richard Pettigrew

Download or read book Epistemic Risk and the Demands of Rationality written by Richard Pettigrew and published by Oxford University Press. This book was released on 2022-08-17 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: How much does rationality constrain what we should believe on the basis of our evidence? According to this book, not very much. For most people and most bodies of evidence, there is a wide range of beliefs that rationality permits them to have in response to that evidence. The argument, which takes inspiration from William James' ideas in 'The Will to Believe', proceeds from two premises. The first is a theory about the basis of epistemic rationality. It's called epistemic utility theory, and it says that what it is epistemically rational for you to believe is what it would be rational for you to choose if you were given the chance to pick your beliefs and, when picking them, you were to care only about their epistemic value. So, to say which beliefs are permitted, we must say how to measure epistemic value, and which decision rule to use when picking your beliefs. The second premise is a claim about attitudes to epistemic risk, and it says that rationality permits many different such attitudes. These attitudes can show up in epistemic utility theory in two ways: in the way you measure epistemic value; and in the decision rule you use to pick beliefs. This book explores the latter. The result is permissivism about epistemic rationality: different attitudes to epistemic risk lead to different choices of prior beliefs; given most bodies of evidence, different priors lead to different posteriors; and even once we fix your attitudes to epistemic risk, if they are at all risk-inclined, there is a range of different priors and therefore different posteriors they permit.


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