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Ideas for 'Metaphysics', 'The Later Works (17 vols, ed Boydston)' and 'Is Justified True Belief Knowledge?'

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13. Knowledge Criteria / A. Justification Problems / 2. Justification Challenges / b. Gettier problem

8886	Being a true justified belief is not a sufficient condition for knowledge [Gettier]
	Full Idea: The claim that someone knows a proposition if it is true, it is believed, and the person is justified in their belief is false, in that the conditions do not state a sufficient condition for the claim.
	From: Edmund L. Gettier (Is Justified True Belief Knowledge? [1963], p.145)
	A reaction: This is the beginning of the famous Gettier Problem, which has motivated most epistemology for the last forty years. Gettier implies that justification is necessary, even if it is not sufficient. He gives two counterexamples.