 For an empiricist, an expression’s meaning reflects the causal mechanisms guiding everyday classification and communication. For a rationalist, in contrast, an expression’s meaning reflects what is apriori accessible to the speaker on the basis of ideal reflection. The empiricist is primarily concerned with causal explanation of linguistic facts, while the rationalist is primarily concerned with idealized apriori rationality and insights into objective possibility. This difference in emphasis can have significant ramifications for G2D.