To dwell on why Bacon's advice ought to be followed by others is probably less helpful than trying to follow it oneself. This task clearly outstrips the competence of any single individual. It calls for the pooling of many talents and the writing of many books. Collaboration is difficult to obtain as long as the relevance of the topic to different fields of study remains obscure. Before aid can be enlisted, it seems necessary to develop some tentative hypotheses relating the shift from script to print to significant historical developments.

This task, in turn, seems to call for a somewhat unconventional point of departure and for a reformulation of Bacon's advice. Instead of trying to deal with “the force, effect, and consequences” of a single postclassical invention that is coupled with others, I will be concerned with a major transformation that constituted a large cluster of changes in itself. Indecision about what is meant by the advent of printing has, I think, helped to muffle concern about its possible consequences and made them more difficult to track down. It is difficult to find what happened in a particular Mainz workshop in the 1450s.