 This difficulty can be avoided, Chalmers argues, if we rely on a notion of epistemic possibility—what seems possible after ideal rational reflection—to interpret the 2D framework. More specifically, he focuses on the notion of apriori coherence: claims that could be true for all one can tell on the basis of idealized apriori  reasoning.[18]  This notion of apriori coherence is used to answer the two interpretive questions highlighted above: (i) apriori coherence is used to characterize the possibilities relative to which 1-intensions are defined, and (ii) apriori coherence is invoked to assign 1-intensions to a speaker’s expressions.