A strategy for assessing closure

Erkenntnis 65 (3):365 - 383 (2006)
This paper looks at an argument strategy for assessing the epistemic closure principle. This is the principle that says knowledge is closed under known entailment; or (roughly) if S knows p and S knows that p entails q, then S knows that q. The strategy in question looks to the individual conditions on knowledge to see if they are closed. According to one conjecture, if all the individual conditions are closed, then so too is knowledge. I give a deductive argument for this conjecture. According to a second conjecture, if one (or more) condition is not closed, then neither is knowledge. I give an inductive argument for this conjecture. In sum, I defend the strategy by defending the claim that knowledge is closed if, and only if, all the conditions on knowledge are closed. After making my case, I look at what this means for the debate over whether knowledge is closed.
Keywords Brueckner  defeaters  Dretske  epistemic closure principle  reliabilism  safety  sensitivity  transmission principle  Warfield
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DOI 10.2307/27667871
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References found in this work BETA
Fred I. Dretske (1970). Epistemic Operators. Journal of Philosophy 67 (24):1007-1023.

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