MICHEL FOUCAULT, info.

          According to Hume, there really isn't any "room for
          doubting" because assocaitions are so automatic; there is
          only room for doubt if one supposes that reason is
          infallible, or that "demonstrations of reason" are conducted
          through an infallible faculty, which is precisely the view
          he is trying to disestablish by posing a 'skeptical
          solution'.  I am only guilty of assuming your familiarity
          with the problem.