My goal is not to weigh in on which approach ought ultimately to be adopted in DSM-5. Indeed, as the current proposal makes clear, a hybrid model may ultimately succeed, satisfying everyone (and likely no one completely). Instead, I am suggesting that the debate ahead is not best understood as ideological, but epistemological. The question is not whose ideas are better, but how to grapple with competing standards of proof. The way forward is for advocates on each side to retain their core beliefs while effectively and cooperatively translating them across the epistemological divide.