John and Brendan thank Paul McElroy and Brian Leahy for reading and commenting on early drafts. They also thank the two anonymous reviewers who provided detailed and helpful feedback on the manuscript and the staff at the MIT Press for their support and guidance.
John thanks his family and friends for their support and encouragement during the preparation of this book and dedicates this book to his father, John Bernard Kelleher, in recognition of his love and friendship.
Brendan thanks Grace, Daniel, and Eleanor for their constant support while he was writing yet another book (his fourth), juggling the day jobs, and traveling.