Is engaging in debate with someone a concession that they may have a point? When it comes to positions one adamantly rejects—misogyny or climate denialism, for example—is disagreeing enough, or is it necessary to dismiss and avoid them completely? A willingness to argue with adversaries is often looked at with suspicion—as though it indicated a lack of ideological conviction. I will explain that this suspicion rests on a misunderstanding of disagreement in the culture at large and in social epistemology.