Present interest in communication research in the social and physical sciences raises some interesting and difficult questions for the economic historian. Arthur Cole, who claims that he is merely trying to carry further the work of Harold Innis and others at Toronto, but who is surely the moving spirit in this session, has suggested that we might begin by pin-pointing a few leading questions for examination. Is this comparatively recent development to be regarded as merely a passing phase in the history of fashions in thought? Is the process of relating communication to economic change mainly a process of sophistication and is there anything to argue about in this relationship? Or, on the other hand, does it in fact amount to a major break-through in scientific and historical analysis, something comparable to the impact made on economics about a century ago by the Austrian School?