Philosophical Quarterly 70 (281):711-737 (2020)

Authors
Bob Beddor
National University of Singapore
Abstract
When is it permissible to rely on a proposition in practical reasoning? Standard answers to this question face serious challenges. This paper uses these challenges to motivate a certainty norm of practical reasoning. This norm holds that one is permitted to rely on p in practical reasoning if and only if p is epistemically certain. After developing and defending this norm, I consider its broader implications. Taking a certainty norm seriously calls into question traditional assumptions about the importance of belief and knowledge. In particular, it raises the possibility that many epistemological jobs that are usually assigned to belief and knowledge should be reallocated to two related but importantly different states: psychological and epistemic certainty.
Keywords certainty  practical reasoning  action  assertion  belief
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DOI 10.1093/pq/pqaa006
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References found in this work BETA

Belief, Credence, and Pragmatic Encroachment1.Jacob Ross & Mark Schroeder - 2014 - Philosophy and Phenomenological Research 88 (2):259-288.
Evidence, Pragmatics, and Justification.Jeremy Fantl & Matthew McGrath - 2002 - Philosophical Review 111 (1):67-94.
Knowledge and Lotteries.John Hawthorne - 2005 - Philosophical Quarterly 55 (219):353-356.

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