 One possible rejoinder to Williamson’s argument would be to characterize the counterintuitive claim as the claim that no suitable arrangement of matter is metaphysically sufficient for the presence of a mountain (i.e., that mountains are impossible) and there is no reason why the negation of this proposition cannot be, on more restrictive accounts of intuition, the content of an intuition. Another possible rejoinder would point out that we have extremely good grounds for believing that there are mountains and to suggest that the complaint that p is counterintuitive is merely the claim that not-p is extremely well-justified.