 Another kind of defense of epistemic Evidentialism says that the central Evidentialist principle—that we ought to believe on the basis of sufficient evidence that is in our possession—is not an analytic truth drawn from the concept of belief, and not a ‘functional norm’ arising from reflection on the way our faculties are set up or designed, but rather a synthetic principle that we simply rationally intuit in the course of reflecting on concepts and thought-experiments. This approach seems coherent and in some ways attractive, though it has not found many defenders in the literature.