In an epistemology of contextualism, how robust does consensus need to be for critique to be practically effective? In ‘Relativism and the Critical Potential of Philosophy of Education’ Frieda Heyting proposes a form of contextualism, but her argument raises a number of problems. The kinds of criteria that her version of contextualism will furnish provide, at best, the potential only for an immanent form of critique from within a particular practice, and the possibility that practitioners alone will adopt a general (...) stance of critique. By their nature, the criteria that Heyting endorses will be too transient and ephemeral to assist in any larger project that might be aimed at making effective criticism of the status quo. Further problems are exposed to do with the conditions needed to make critique effective when Heyting's normative argument is situated in the Realpolitik of contemporary education. Drawing on the work of Charles Sanders Peirce, and in a manner intended to be complementary to Heyting's normative argument, the paper offers some suggestions regarding the role that doubt might play in justifying criticisms of the status quo. (shrink)