Matt Doeden is a freelance author and editor from Minnesota. He s written numerous children s books on sports, music, current events, the military, extreme survival, and much more. His books Sandy Koufax (Twenty-First Century Books, 2006) and Tom Brady: Unlikely Champion (Twenty-First Century Books, 2011) were Junior Library Guild selections. Doeden began his career as a sports writer before turning to publishing. He lives in Minnesota with his wife and two children.

Tod Smith grew up in Rhode Island, where he attended the Joe Kubert School of Cartoon and Graphic Art. He started working in comics in the 1980s, and has been an illustrator for comics and books ever since. He loves to play music in his free time, and when he was in middle school, the Beatles inspired him to start to play the guitar. He lives in Connecticut with his wife, Candace.

Keith Wilson is Professor Emeritus of Pharmacological Biochemistry and former Head of the Department of Biosciences, Dean of the Faculty of Natural Sciences, and Director of Research at the University of Hertfordshire.

Keith Wilson is Professor Emeritus of Pharmacological Biochemistry and former Head of the Department of Biosciences, Dean of the Faculty of Natural Sciences, and Director of Research at the University of Hertfordshire.

Dave Hoover is a Lead Consultant with Obtiva, specializing in Agile Development. He is a hands-on coach, spending the majority of his time pair programming with client developers, crafting Ruby and Java applications via test-driven development. Dave was trained in psychology and spent 4 years practicing child and family therapy. He made a career change and landed a job at a web startup where he had the opportunity to teach himself Perl under the guidance of some experienced developers. Since those first days in 2000, he has been consistently introspective and reflective about his journey toward mastery through journaling and blogging. He has written articles for XML.com and Stickyminds.com, developed OSS for the Selenium and Watir projects, and speaks at conferences like XP2005, RailsConf 2006, and Agile 2007. What qualifies him to write this book is that the patterns were initially extracted from his own journey and that he has the expertise to introspect on his own experience and explore the experiences of others through interviews. Prior to joining Obtiva, Dave was with Thoughtworks.