 We have already seen some data bearing on this issue in our discussion of folk realism above. The claim here is not about realism per se, but about whether experimental evidence can give us insight into the semantics of moral language, since our intuitions about whether there is genuine faultlessness can tell us about whether there is a single shared content between two utterances—a single proposition that one party asserts and another denies—or whether the two parties’ utterances contain implicit relativizations. This has, at least, been the assumption guiding much of the debate over disagreement and its implication for moral semantics. In recent work, however, John Khoo and Joshua Knobe (2018) have cast doubt on this assumption; their experiments indicate that subjects do not see disagreement as requiring exclusionary content—a single proposition that one party accepts and the other rejects. Intuitions about disagreement may thus not be as straightforwardly tied to moral semantics as philosophers have thought: judgments that two individuals genuinely disagree about some claim do not necessarily imply a single shared content between the two speakers. This work is still in early stages, but it reveals the complications involved in reading semantics off disagreement.