Gettier-IsJTBKnowledge

Gettier-IsJTBKnowledge - Is Justified True Belief...

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Is Justified True Belief Knowledge? EDMUND GETTIER Edmund Gettier is Professor Emeritus at the University of Massachusetts, Amherst. This short piece, published in 1963, seemed to many decisively to refute an otherwise attractive analysis of knowledge. It stimulated a renewed effort, still ongoing, to clarify exactly what knowledge comprises. ____________________ From Analysis. vol. 23 (] 966). Copyright @ by Edmund Gettier. Reprinted by permission of the author. Various attempts have been made in recent years to state necessary and sufficient conditions for someone's knowing a given proposition. The attempts have often been such that they can be stated in a form similar to the fol1owing:1 (a) S knows that P IFF (i.e., if and only if) (i) P is true, (ii) S believes that P, and (iii) S is justified in believing that P. For example, Chisholm has held that the following gives the necessary and sufficient conditions for knowledge:2 (b) S knows that P IFF (i.e., if and only if) (i) S accepts P, (ii) S has adequate evidence for P, and (iii) P is true. Ayer has stated the necessary and sufficient conditions for knowledge as follows:3 (c) S knows that P IFF (i) P is true, (ii) S is sure that P is true, and (iii) S has the right to be sure that P is true. I shall argue that (a) is false in that the conditions stated therein do not constitute a sufficient condition for the truth of the proposition that S knows that P. The same argument will show that (b) and (c) fail if "has adequate
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Gettier-IsJTBKnowledge - Is Justified True Belief...

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