According to contextualism, then, there is no single proposition expressed by the sentences used in the CP-based argument for Cartesian Skepticism. Rather, there are many such propositions. Two interesting ones are the propositions expressed in everyday contexts, where CP2 as well as the conclusion of the argument express false propositions, and those expressed in heightened-scrutiny contexts, where both CP2 as well as the conclusion of the argument express true propositions. CP1 (as well as CP