I could never have written this book without the personal support of my friends and family, especially Roz Doctorow, Gord Doctorow and Neil Doctorow, Amanda Foubister, Steve Samenski, Pat York, Grad Conn, John Henson, John Rose, the writers at the Cecil Street Irregulars and Mark Frauenfelder.

I owe a great debt to the writers and editors who mentored and encouraged me: James Patrick Kelly, Judith Merril, Damon Knight, Martha Soukup, Scott Edelman, Gardner Dozois, Renee Wilmeth, Teresa Nielsen Hayden, Claire Eddy, Bob Parks and Robert Killheffer.

I am also indebted to my editor Patrick Nielsen Hayden and my agent Donald Maass, who believed in this book and helped me bring it to fruition.

Finally, I must thank the readers, the geeks and the Imagineers who inspired this book.

Cory Doctorow

San Francisco

September 2002