Book excerpt: From pure fantasy to hard science fiction, this finely crafted offering by one of the greatest science fiction writers of his generation promises to stretch readers' minds far beyond ordinary limits. Nineteen tales from Michael Swanwick's best short fiction of the past decade are gathered here for the first time, including the 1999 Hugo Award-nominated "Radiant Doors" and "Wild Minds" and this year's winning story, "The Very Pulse of the Machine." The collection also features "The Raggle Taggle Gypsy-O," written especially for this volume.