Guesstimation: Solving the World's Problems on the Back of a Cocktail Napkin | 
 enlarge | Authors: Lawrence Weinstein, John A. Adam
Publisher: Princeton University Press
Category: Book
List Price: $19.95
Buy New: $12.20
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Avg. Customer Rating:  4 reviews
Sales Rank: 8161
Media: Paperback
Number Of Items: 1
Pages: 320
Shipping Weight (lbs): 0.7
Dimensions (in): 7.4 x 4.4 x 0.7
ISBN: 0691129495
Dewey Decimal Number: 519.544
EAN: 9780691129495
ASIN: 0691129495
Publication Date: April 1, 2008
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Product Description
Guesstimation is a book that unlocks the power of approximation--it's popular mathematics rounded to the nearest power of ten! The ability to estimate is an important skill in daily life. More and more leading businesses today use estimation questions in interviews to test applicants' abilities to think on their feet. Guesstimation enables anyone with basic math and science skills to estimate virtually anything--quickly--using plausible assumptions and elementary arithmetic. Lawrence Weinstein and John Adam present an eclectic array of estimation problems that range from devilishly simple to quite sophisticated and from serious real-world concerns to downright silly ones. How long would it take a running faucet to fill the inverted dome of the Capitol? What is the total length of all the pickles consumed in the US in one year? What are the relative merits of internal-combustion and electric cars, of coal and nuclear energy? The problems are marvelously diverse, yet the skills to solve them are the same. The authors show how easy it is to derive useful ballpark estimates by breaking complex problems into simpler, more manageable ones--and how there can be many paths to the right answer. The book is written in a question-and-answer format with lots of hints along the way. It includes a handy appendix summarizing the few formulas and basic science concepts needed, and its small size and French-fold design make it conveniently portable. Illustrated with humorous pen-and-ink sketches, Guesstimation will delight popular-math enthusiasts and is ideal for the classroom.
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| Customer Reviews:
 Ok, but I know a better book for this June 5, 2008
11 out of 11 found this review helpful
This book was entertaining reading...except that most of the more interesting examples described in this book were so familiar. This is one of those books where I might rate it better if it weren't for the fact that there is a far better book for anyone interested in this topic. Like Guesstimation, How to Measure Anything: Finding the Value of "Intangibles" in Business by Douglas Hubbard also discusses the Fermi approach and how ancient Greeks estimated the circumfrance of the Earth (Hubbard's book uses these same examples even though it came out almost a year before Guesstimation...curious). But Hubbard picks up where Guestimation, as another reviewer puts it, "falls short". After a bit of "Fermi decomposition", Hubbard discusses how we can learn to excel at subjectively assessing odds and ranges and how we can compute the value of further measurement. Then he gets into a fascinating array of practical methods of observation to further reduce uncertainty. Although the techniques in Hubbard's book are based on sophisticated mathematical methods, he is able to reach a much broader audience by distilling the math into simple charts, tables and procedures. In short, if you owned both of these books, Guesstimation would be redundant and wouldn't cover nearly as much.
 A little knowledge, common sense and basic algebra will carry you far. May 26, 2008
3 out of 8 found this review helpful
This is a great "hands on" book that teaches the art of making a quantitative "educated" guess based on just a few basic facts most people know (or should know). I found this book great reading and very educational. Recommended for anyone.
Very useful brain exercises May 18, 2008
14 out of 16 found this review helpful
Somehow, guessing at numbers is unsettling, even though I've done it all my life. John Adam is a professor of applied mathematics, with a degree in physics. Larry Weinstein is a nuclear physicist. Their book is devoted to proving that intelligent guessing is useful and fun.
The book lays out some general principles but its great strength lies in the interesting problems, a series of hints to help you solve each problem, and an interesting discussion of the pitfalls and triumphs involved. Three key points: estimate by powers of ten, break complex problems into simple steps and consider alternative approaches.
The book includes an excellent appendix containing a few formulas and scientific concepts, together with some useful statistics. The pen-and-ink sketches are funny and to the point.
Best of all, the Princeton Press maintains a site with new problems on a weekly basis; a recent question was how many golf balls would it take to encircle the earth at the equator. Hints included:
a. What is the diameter of a golf ball?
b. What is the circumference of the earth?
The authors give several interesting hints at determining the circumference of the earth (if you don't know it), including the 24 time zones, the number of time zones in the US, the time it takes to fly from New York City to Los Angeles, etc.
Brain stretching stuff, which is always good for you, and the publishers claim job applicants should be prepared for tests of their estimating abilities. The Chinese rights have just been sold, and we may face even more competition on that front as well. If you learn by doing, this book is a great way to improve your skills and have fun doing it.
Robert C. Ross 2008
Guesstimation May 3, 2008
8 out of 19 found this review helpful
The idea of this book is great, and I had hoped to learn new principles for estimation. Unfortunately, the execution falls short. I expected the authors to teach methods and techniques, but instead they rely almost exclusively on examples that try to teach by illustration. I don't find that style effective and I had hoped for a deeper presentation.
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