This just in: The Great Debate and Metrognomes have been assigned ISBN-13 numbers. For those who find that information useful, The Great Debate trade paperback is 978-0-595-26142-0, the hardback is 978-0-595-65533-5. The Metrognomes trade paperback is 978-0-595-42973-8. The e-book is 978-0-595-87314-2.