The Public Justification Principle requires that coercive institutions be justified to all who live under them. I argue that this principle often cannot be satisfied without persons depending on the pure informative testimony of others, even under realistically idealized situations. Two main results follow. First, the sense of justification relevant to this principle has a strongly externalist component. Second, normative expectations of trust are essential to public justification. On the view I propose, whether the Public Justification Principle is satisfied depends (...) on the features of the network of testifiers in which persons are embedded. I consider several such networks to show which features are plausibly relevant. The importance of testimony for public justification ultimately suggests that we should moderate our expectations about the kind of conciliation we can achieve with the social order in which we live. (shrink)

Many philosophers have claimed that relying on the testimony of others in normative questions is in some way problematic. In this paper, I consider whether we should be troubled by deference in democratic politics. I argue that deference is less problematic in impure cases of political deference, and most non-ideal cases of political deference are impure. To establish the second point, I rely on empirical research from political psychology. I also outline two principled reasons why we should expect political deference (...) to be untroubling: political problems are difficult and require a division of epistemic labour; furthermore, there is value in exercising epistemic solidarity with those one shares an identity or interests with. (shrink)