I am grateful for the valuable editorial help of Lucille Enix, Denise Brink, and David Hartwell. Special thanks go to Peter Sutherland and Linda Mills for reading and commenting on an early draft, to Hugo Bezdek for sharing insights into the workings of government agencies, and especially to my wife for her keen critical eye. Finally, I thank anonymous colleagues and their institutions who played host to me over several years, thus providing stolen moments in airplanes, motels, and restaurants, to add a few more paragraphs.