Unreckoned Misleading Truths and Lehrer’s Theory of Undefeated Justification

Journal of Philosophical Research 17:465-481 (1992)
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Abstract

According to Keith Lehrer’s coherence theory, knowledge is true acceptance whose justification is undefeated by a falsehood. It has recently become clear that Lehrer’s handling of important Gettier-inspired problems depends upon his position that only falsehoods accepted by the subject can act as defeaters of knowledge. I argue against this and present an example in which an unreckoned truth---one neither believed nor believed to be false by the subject---defeats knowledge. I trace the negative implications of this matter for the coherence theory.

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Denying deception: A reply to Terry price.Keith Lehrer - 1994 - Philosophical Studies 74 (3):283 - 290.

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