Abstract
Blumenberg's rejection of Karl Lowith's secularization thesis, as presented in Lowith's The Legitimacy of the Modern Age, and Blumenberg's defense of an alternative theory of functional reoccupations raises questions about the kind of progress he finds operant in historiography and historical understanding. These questions are best addressed within the framework of his recent Work on Myth, which defines the legitimacy of an age or myth in terms of progressive adaptability rather than autonomy. Neither this work nor the study on legitimacy, however, succeeds in establishing a transcendental warrant for the historiographic deployment of categories of progress and novelty. Blumenberg would have us believe that historical understanding and action are functionally legitimated by defacto institutions, be they traditional authorities or rationally adaptive "instrumental" mechanisms, whose own normative, teleological legitimacy remains largely unquestioned. The rational subject of self-legislation who was originally constituted as an autonomous member of a community of ends has been replaced in his philosophy of history by an irrational subject of selfassertion, who can only be functionalized for the "arbitrarily chosen ends" of the system