Malcolm Gladwell's piece ("In the Air." The New Yorker May 12, 2008) on innovation uses Bell's and Gray's battle over the telephone patent as an illustration for the concept of multiple innovation or simultaneous discovery. I find it an interesting text, although it remains somewhat limited in its discussion of the process of innovation which it simply seems to reduce to the final product, e.g. the telephone. A more innovative approach in my view is, for instance, Michael E. Gorman's analysis of Bell's and Gray's mental models leading to their respective designs of the telephone (Michael E. Gorman, "Mind in the World: Cognition and Practice in the Invention of the Telephone." Social Studies of Science 27, no. 4 (1997): 583-624.), see post of Feb 13 below.