 First, such arguments are arguments for the conclusion that intuitions (either intuitions generally or intuitions of some specific sort) do not justify us in believing their contents. Hence, any such skeptical argument must have a premise stating a necessary condition on the justification of belief. Call this premise, “the normative premise.” Second, such an argument must contain a premise stating that beliefs based on the intuitions in question do not satisfy the necessary condition of justified belief advanced in the normative premise. Call this premise, “the non-normative premise.”