 AV3 is plausible as well. If composition occurs in one case but not in another, then surely there must be some explanation for why that is. In other words, the facts about composition are not “brute”. Yet the sorts of differences that one finds among adjacent cases in a sorites series for composition—for instance, that the handle and head are a fraction of a centimeter closer together in the one than in the other—can’t plausibly explain why composition occurs in one case but not in the  other.[16]