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Oxford Studies in Epistemology Volume 5$
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Tamar Szabó Gendler and John Hawthorne

Print publication date: 2015

Print ISBN-13: 9780198722762

Published to Oxford Scholarship Online: April 2015

DOI: 10.1093/acprof:oso/9780198722762.001.0001

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When Beauties Disagree

When Beauties Disagree

Why Halfers Should Affirm Robust Perspectivalism

Chapter:
(p.195) 7. When Beauties Disagree
Source:
Oxford Studies in Epistemology Volume 5
Author(s):

John Pittard

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780198722762.003.0007

This chapter presents a variant of the “Sleeping Beauty” case that shows that those who are “halfers” with respect to the original Sleeping Beauty problem are committed to holding that rationality can be perspectival in a rather extreme and surprising way. Specifically, halfers are committed to the possibility of “robustly perspectival” contexts, contexts where two maximally rational disputants in perfect communication are rationally required to disagree despite knowing that their epistemic positions are equally strong. Unlike halfers, “thirders” are committed to a different result in the new case that does not involve any counterintuitive perspectivalism. While this case could be seen as providing a new and powerful argument against the halfer position, it is argued that there are good reasons for thinking that the case does involve a robustly perspectival context, a conclusion that calls into question a key principle often taken for granted in the disagreement literature.

Keywords:   disagreement, Sleeping Beauty, rationality, perspectivalism, evidential selection procedure, self-locating belief

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