GIS has been coming of age. Millions of people use one GIS or another every day, and with the advent of Web we are promised GIS functionality on virtually every desktop and web-enabled cellphone. GIS knowledge, once restricted to a few insiders working with minicomputers that, as a category, don’t exist any more, has proliferated and is bestowed on students at just about every university and increasingly in community colleges and secondary schools. GIS textbooks abound and in the course of 20 years have moved from specialized topics (Burrough 1986) to general-purpose textbooks (Maantay and Ziegler 2006). With such a well-informed user audience, who needs yet another.
