 Recall that Descartes characterizes the cogito as an Archimedean point, of sorts, in his constructive efforts at finding something “certain and unshakeable.” It is clear how the cogito serves this role on interpretations rendering it as immune to the Evil Genius Doubt. In what sense is it an Archimedean point on interpretations rendering it vulnerable to doubt? Insofar as the cogito is the first cognition noticed to resist any efforts at a direct doubt, it can be said to play an Archimedean role. For it exemplifies the kind of cognitions Descartes employs in his constructive efforts, arguing for a solution to the sceptical problem.