 In medieval semantics, propositions that correspond to two distinct mental propositions are ambiguous or equivocal. (Indeed, that is the medieval account of equivocation.) Thus, for Peter, insolubles in spoken or written language are strictly equivocal and do not have a single signification. In one sense (answering to the first of Gregory’s conjuncts), they are true; in another sense (answering to Gregory’s second conjunct), they are false. By contrast, for Gregory, insolubles are just false, not ambiguous at all; they correspond to a single false conjunction, one conjunct of which is true and the other false.