Reflective equilibrium is a story about how we actually justify our inferential practices. According to Goodman, nothing more can be demanded or achieved. It seems, perhaps, prima facie desirable that we also seek a justification in the sense of the old problem, but Hume’s argument suggests that such a justification is impossible. If this is correct, the remaining problem is to define our inferential practices by bringing explicit rules into reflective equilibrium with our tutored intuitions. “Justified” or “valid” are predicates that are applied to inferences on this basis.