Epistemic Justification and Third Parties

Whether a belief is epistemically justified is widely considered to be an affair between the believer and the way they formed their belief. In this paper, I explore the view that the justificatory status of a belief is linked to what is appropriate for third parties to believe. In doing so, I will draw inspiration from debates in legal theory, where the view that legal justification is linked to the appropriateness of third-party conduct has been systematically worked out and widely codified. I will show that these legal debates are strikingly analog to recent discussions about the function of epistemic assessment, where it has been argued that there is a link between a belief’s being epistemically justified and the appropriateness of third-party deference to said belief (Dogramaci, 2012, 2015; Greco and Hedden, 2016). In this paper, I will spell out this link and argue that it provides us with a powerful explanation of our division of epistemic labour. However, I will also show that this explanatory proposal is threatened by cases of (what I call) deference conflicts. I will argue that the most promising response to these cases is to take a “civil law–style” approach and favour the view that epistemic justification is factive.