Derek Gregory is Professor of Geography at the University of British Columbia. He taught for many years at Cambridge before moving to UBC, and is the author of numerous books: Ideology, Science, and Human Geography (1978); Regional Transformations and Industrial Revolution (1982); Geographical Imaginations (1994); The Colonial Present (Blackwell, 2004); and the forthcoming Dancing on the Pyramids (U of Minnesota Press, 2005). He is also co-editor of all four editions of the Dictionary of Human Geography (Blackwell) and is currently the co-editor of the journal Society and Space. Allan Pred is Professor of Geography at the University of California-Berkeley. He is the author of a very large number of books, with two published by Harvard, one by Cambridge, one by Minnesota, one by California, and one by Routledge.