 Relativism is the tool with which Feyerabend hopes to “undermine the very basis of Reason” (ibid.). But is it Reason with a capital “R”, the philosophers’ abstraction alone, that is to be renounced, or reason itself too? Feyerabend is on weak ground when he claims that “Reason” is a philosophers’ notion which has no content, for it is precisely the philosopher who is willing to attach a specific content to the formal notion of rationality (unlike the layperson, whose notion of reason is closer to what Feyerabend calls the “material” conception, where to be rational is “to avoid certain views and to accept others” (ibid., p. 10)). 