As in Agger's review of sociology (1991), intertextuality blurs the boundaries between educational communications and technology and other disciplines. Jurisdictions over territory may be renegotiated with theory. In this context, the contribution of postmodern and poststructural theory appears not in a new social theory but as a sensibility modulating existing theories. It is demonstrated by the refocusing of measurement and evaluation, one of the most conservative areas in the educational research establishment (Moss, 1994, 1995). No posturing about an age of revelations is necessary. Despite social change there is continuity in culture. The present-day computerization of society and the medieval cathedralization of society should share the same explanations. While its definitions may develop and overlap with other fields, educational communications and technology continues as "a web of beliefs, activities, and products" (Yeaman, 1995d, p. 73).