“Edmund Gettier convinced most philosophers that the received wisdom of millennia about the concept of knowledge was mistaken: “knowledge” was not simply a matter of having a justified, true belief … A justified true belief isn’t “knowledge” when the justification for the true belief isn’t the cause of why the agent holds the belief. As Philip Kitcher put the point, in explaining the stimulus Gettier provided to the “naturalistic” turn in epistemology: “the epistemic status of a belief state depends on the etiology of the state.” … We can understand, now, the logic of the hermeneutics of suspicion as exploiting precisely this point about the epistemic status of belief: we should be suspicious of the epistemic status of beliefs that have the wrong causal etiology. That’s the lesson of the Gettier counter-examples, and it is the lesson which underwrites the suspicion that Marx, Nietzsche, and Freud recommend by way of providing alternative causal trajectories to explain our beliefs. To be sure, beliefs with the wrong causal etiology might be true; but since they are no longer cases of knowledge, we have no reason to presume that to be the case.”

—  Brian Leiter

"The Hermeneutics of Suspicion: Recovering Marx, Nietzsche, and Freud"

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Brian Leiter 13
American philosopher and legal scholar 1963

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