Abstract

Neil Levy argues that the importance of acquiring cultural knowledge in our evolutionary past selected for conformist and deferential social learning, and that contemporary bad beliefs – roughly, popular beliefs at odds with expert consensus – result primarily from the rational deployment of such conformity and deference in epistemically polluted modern environments. I raise several objections to this perspective. First, against the cultural evolutionary theory from which Levy draws, I argue that humans evolved to be highly sophisticated and vigilant social learners. Given this, the ubiquity of bad beliefs in the modern world is puzzling: if humans are so smart and suspicious, why do these characteristics seem so rare in domains such as politics? I argue that the answer rests on the incentives that underlie bad beliefs, and I favorably contrast this explanation with Levy’s appeal to epistemic pollution.