An Objective Justification of Bayesianism II: The Consequences of Minimizing Inaccuracy

Philosophy of Science 77 (2):236-272 (2010)
Abstract
One of the fundamental problems of epistemology is to say when the evidence in an agent’s possession justifies the beliefs she holds. In this paper and its prequel, we defend the Bayesian solution to this problem by appealing to the following fundamental norm: Accuracy An epistemic agent ought to minimize the inaccuracy of her partial beliefs. In the prequel, we made this norm mathematically precise; in this paper, we derive its consequences. We show that the two core tenets of Bayesianism follow from the norm, while the characteristic claim of the Objectivist Bayesian follows from the norm along with an extra assumption. Finally, we consider Richard Jeffrey’s proposed generalization of conditionalization. We show not only that his rule cannot be derived from the norm, unless the requirement of Rigidity is imposed from the start, but further that the norm reveals it to be illegitimate. We end by deriving an alternative updating rule for those cases in which Jeffrey’s is usually supposed to apply.
Keywords No keywords specified (fix it)
Categories (categorize this paper)
DOI 10.1086/651318
Options
 Save to my reading list
Follow the author(s)
Edit this record
My bibliography
Export citation
Find it on Scholar
Mark as duplicate
Request removal from index
Revision history
Download options
Our Archive


Upload a copy of this paper     Check publisher's policy     Papers currently archived: 30,798
Through your library
References found in this work BETA

No references found.

Add more references

Citations of this work BETA
When Propriety Is Improper.Kevin Blackwell & Daniel Drucker - forthcoming - Philosophical Studies:1-20.
Diachronic Dutch Books and Evidential Import.J. Dmitri Gallow - forthcoming - Philosophy and Phenomenological Research.

View all 38 citations / Add more citations

Similar books and articles
Added to PP index
2009-11-21

Total downloads
164 ( #29,534 of 2,199,754 )

Recent downloads (6 months)
5 ( #44,378 of 2,199,754 )

How can I increase my downloads?

Monthly downloads
My notes
Sign in to use this feature