Synthese 183 (2):127-142 (2011)

Authors
Marc Alspector-Kelly
Western Michigan University
Abstract
Knowledge closure is, roughly, the following claim: For every agent S and propositions P and Q, if S knows P, knows that P implies Q, and believes Q because it is so implied, then S knows Q. Almost every epistemologist believes that closure is true. Indeed, they often believe that it so obviously true that any theory implying its denial is thereby refuted. Some prominent epistemologists have nevertheless denied it, most famously Fred Dretske and Robert Nozick. There are closure advocates who see other virtues in those accounts, however, and so who introduce revisions of one sort or another in order to preserve closure while maintaining their spirit. One popular approach is to replace the “sensitivity” constraint at the heart of both of those accounts with a “safety” constraint, as advocated by Timothy Williamson, Duncan Pritchard, Ernest Sosa, Stephen Luper, and others. The purpose of this essay is to show that this approach does not succeed: safety does not save closure. And neither does a popular variation on the safety theme, the safe-basis or safe-indicator account
Keywords Safety  Sensitivity  Safe  Sensitive  Safe-basis  Safe-indicator  Closed  Closure  Knowledge
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DOI 10.1007/s11229-010-9755-x
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References found in this work BETA

Knowledge and its Limits.Timothy Williamson - 2000 - Oxford University Press.
Counterfactuals.David Kellogg Lewis - 1973 - Cambridge, MA, USA: Blackwell.
Philosophical Explanations.Robert Nozick - 1981 - Harvard University Press.

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Citations of this work BETA

Saving safety from counterexamples.Thomas Grundmann - 2018 - Synthese 197 (12):5161-5185.
Fallibilism and Multiple Paths to Knowledge.Wesley H. Holliday - 2015 - Oxford Studies in Epistemology 5:97-144.
Sensitivity, Safety, and Closure.Sven Bernecker - 2012 - Acta Analytica 27 (4):367-381.

View all 14 citations / Add more citations

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Sensitivity, Safety, and Closure.Sven Bernecker - 2012 - Acta Analytica 27 (4):367-381.

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