Abstract

Whether deliberate or not, appeals to alleged conspiracies seem to advance political causes in an extraordinarily powerful way. In this paper, I offer an account of why this is so. I argue that some beliefs in conspiracies are self-insulated, in the sense that they are resistant to being revised, while maintaining the semblance of being rationally held in the face of mounting counterevidence. On my view, conspiracy allegations work as political propaganda when they contribute to the formation and sustainment of self-insulated beliefs in conspiracies. These self-insulated beliefs in conspiracies, in turn, structure the social-epistemic environment of their believers and isolate them from dissenting voices. Injecting and sustaining conspiracy narratives in political discourse can thus be an insidious and effective strategy for advancing political agendas and closing off rational debate.