Full of tools, tricks, and tips for solving problems in the real world, this book serves as an ideal training manual for those who are new to or intimidated by quantitative analysis and acts as an excellent refresher for those who have more experience but want to improve the quality of their data, the clarity of their graphics, and the cogency of their arguments. In addition to containing numerous updates to the contents—references, URLs, and reading lists—this second edition includes a new foreword, revised chapters, and an epilogue. Mastering the art of problem solving takes more than proficiency with basic calculations; it requires understanding how people use information, recognizing the importance of ideology, learning the art of storytelling, and acknowledging the important distinction between facts and values. Intended for executives, professors, and students, this guide addresses these and other essential skills.

"There is nothing else like this book out there. Nobody who deals with problems where numbers matter — and everybody in today’s world really needs to — should be without it."  —John P. Holdren, past president, American Association for the Advancement of Science, from the Foreword

"A lively, well-written, attractively packaged book on the art of critical thinking."  —Skeptical Inquirer

"Dr. Koomey's book deserves to be widely read and shared, especially by those who take seriously the fragile yet critical role of an informed citizenry in increasingly complex democratic societies."  —Professor Michael Maniates, Allegheny College