Ideologies involve a mistake about their origin: agents think that the ideology arose because of its responsiveness to epistemically relevant conside… - Brian Leiter

Nehamas invokes Nietzsche’s talk of the “eternal basic text of homo natura” (BGE 230, quoted above) as evidence of aestheticism--the view, recall, that “texts can be interpreted equally well in vastly different and deeply incompatible ways” (p. 3). But the talk of “text” in this passage is actually incompatible with aestheticism. For in this passage, as we have seen, Nietzsche asserts that prior claims to “knowledge” have been superficial precisely because they have ignored the “eternal basic text”— ewigen Grundtext—of man conceived as a natural organism. That this text is eternal and basic implies not that it “can be interpreted equally well in vastly different and deeply incompatible ways” but just the opposite: readings which do not treat man naturalistically misread the text—they “falsify” it. It is these misreadings, of course, that Nietzsche, ever the “good philologist,” aims to correct.

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.

Perhaps more striking is the accuracy of many of Marx’s best-known qualitative predictions about the tendencies of capitalist development: capitalism continues to conquer the globe; its effect is the gradual erasure of cultural and regional identities; growing economic inequality is the norm in the advanced capitalist societies; where capitalism triumphs, market norms gradually dominate all spheres of life, public and private; class position continues to be the defining determinant of political outlook; the dominant class dominates the political process which, in turn, does its bidding; and so on.