This article is an account of an electronic discussion which took place between November 1995 and June 1996. A number of specialists in relevant research areas had been invited to take part in the discussion from the very beginning, and some were added later. Altogether 30 individuals subscribed to the list. The “target paper,” written by Allen Renear, was sent to the list on November 27, 1995. The target paper alone comprised 8,500 words. The ensuing discussion, to which 9 of (...) the members on the list made one or more individual contributions, comprises 30 entries of altogether 37,000 words. It is the function of this printed article to provide a brief summary and a key to the full electronic discussion which accompanies it. (shrink)