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A Few Words About Knowledge, Scepticism, and Entailment

Published online by Cambridge University Press:  01 January 2020

Charles B. Daniels*
University of Victoria


In a recent article entitled “Scepticism and Knowing That One Knows” (Canadian Journal of Philosophy 6, pp. 655–63), Michael Hall poses a sceptical argument based upon two rules of inference:

where ‘Kp’ stands for ‘it is known that p'. The argument goes:

Hall (rightly, in my opinion) attacks R2, but he says little about R1. I wish to add a few words of warning about R1 as well.

Research Article
Copyright © The Authors 1978

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