 In the previous sections, we considered applications of the 2D framework that seek to explain the meaning of specific types of expression: indexicals and modal operators. In contrast, proponents of generalized 2D semantics (G2D) believe that the 2D framework can be used to explain an important aspect of the meaning of all expressions. In particular, G2D is meant to vindicate the traditional idea that we have apriori access to our own meanings through armchair reflection.