Wagner and Fair have written a well-researched, thoughtful, and insightful call to mathematics educators everywhere. Drawing on an impressive list of diverse sources in pure mathematics, mathematics education, philosophy, anthropology, history, and psychology, the authors make a clear and compelling argument for a fundamental rethinking of how educators approach mathematics. The persuasive writing and the tantalizing diversity of sources are sure to engage any curious reader, making the book an excellent text for use in undergraduate courses on methods of teaching mathematics. The thorough bibliography also makes this a superb resource for graduate study. Additionally, researchers in mathematics education will find this work useful for the foundations of a study in furthering mathematics education reform efforts. Highly recommended. General readers, advanced undergraduates through faculty, and professionals.