James A. Pooler has been a Professor in the Department of Geography at the University of Saskatchewan in Saskatoon, Canada, since 1983. He holds seminars in population geography (including demography), introductory economic geography, and statistics. His published writing to date includes scientific research articles and chapters in books. He has also published a previous book with Ashgate entitled ’Hierarchical Organization in Society: A Canadian Perspective.’ Professor Pooler is presently editor-in-chief of the international journal ’Geographical & Environmental Modelling.’