This paper discusses a scenario borrowed from Williamson (2000) and repurposes it to argue for the possibility of conflict between two prima facie categorical norms of epistemic rationality: the norm to respect one’s evidence and the norm to be coherent. It is argued, pace Williamson, that in the conflict defining the scenario, the evidence norm overrides the coherence norm; that a rational agent with our evidence would lack evidence about some of their own credences; and that for agents whose evidence (...) is limited in this way, incoherence fails to entail irrationality. The above possibility claim has also been defended by Worsnip (2018), albeit on a quite different premise set and in conjunction with a coherence-centered account of epistemic rationality that issues predictions incompatible with those licensed by the evidence-centered account recommended here, as illustrated towards the end of the paper. (shrink)