Difference of Opinion was co-written by Ray Girvan and Felix Grant under the pen names Babbage and Lovelace. The two personae do not represent the two authors; every diary entry was jointly written by us both, as a team. Rather, they represent different aspects of the computing world: loosely, Babbage is interested in hardware, and Lovelace in software and philosophical aspects. Copyright belongs to the co-authors; contact either Ray Girvan or Felix Grant if you require more information:
ray[at]raygirvan·co·uk or felix[at]felix-grant·co·uk