Abstract

In this article, we explore the impact of non-epistemic factors, such as social identity and cultural biases, on the formation and revision of beliefs. This type of impact is evident in contexts of opinion polarisation where the acceptance of scientific theses by groups of non-experts is at stake. Im these contexts digital media and social networks often play a central role. To analyse the impact of non-epistemic factors from an epistemological perspective, we employ a non-ideal approach to epistemology that takes into account some key non-epistemic factors through the concept of epistemic filter. By means of this concept we explain the selective acceptance of information, and we show how background assumptions and social values which are deeply rooted in an inquiring subject influence the selection and evaluation of evidence and sources of information. Through this non-ideal approach, we analyse the dynamics of scientific denialism, framing it as an epistemic phenomenon in which social and cultural influences shape and distort epistemic practices. We conclude that understanding these underlying mechanisms is crucial to addressing the challenges posed by misinformation and the deep social divisions that result from it.