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Why We Make Mistakes: How We Look Without Seeing, Forget Things in Seconds, and Are All Pretty Sure We Are Way Above Average Hardcover – February 17, 2009

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To Err is Human
Read the first chapter of Why We Make Mistakes, and discover surprising facts about our everyday errors [PDF].

Product Details

  • Hardcover: 304 pages
  • Publisher: Crown Archetype (February 17, 2009)
  • Language: English
  • ISBN-10: 0767928059
  • ISBN-13: 978-0767928052
  • Product Dimensions: 1.1 x 5.8 x 8.4 inches
  • Shipping Weight: 14.4 ounces
  • Average Customer Review: 4.2 out of 5 stars  See all reviews (80 customer reviews)
  • Amazon Best Sellers Rank: #436,748 in Books (See Top 100 in Books)

Editorial Reviews

Amazon.com Review

Book Description
We forget our passwords. We pay too much to go to the gym. We think we’d be happier if we lived in California (we wouldn’t), and we think we should stick with our first answer on tests (we shouldn’t). Why do we make mistakes? And could we do a little better?

We human beings have design flaws. Our eyes play tricks on us, our stories change in the retelling, and most of us are fairly sure we’re way above average. In Why We Make Mistakes, journalist Joseph T. Hallinan sets out to explore the captivating science of human error--how we think, see, remember, and forget, and how this sets us up for wholly irresistible mistakes.

In his quest to understand our imperfections, Hallinan delves into psychology, neuroscience, and economics, with forays into aviation, consumer behavior, geography, football, stock picking, and more. He discovers that some of the same qualities that make us efficient also make us error prone. We learn to move rapidly through the world, quickly recognizing patterns--but overlooking details. Which is why thirteen-year-old boys discover errors that NASA scientists miss—and why you can’t find the beer in your refrigerator.

Why We Make Mistakes is enlivened by real-life stories--of weathermen whose predictions are uncannily accurate and a witness who sent an innocent man to jail--and offers valuable advice, such as how to remember where you’ve hidden something important. You’ll learn why multitasking is a bad idea, why men make errors women don’t, and why most people think San Diego is west of Reno (it’s not).

Why We Make Mistakes will open your eyes to the reasons behind your mistakes--and have you vowing to do better the next time.

A Q&A with Author Joseph T. Hallinan: Which Penny is Correct?

(Click on Image to Enlarge)
Can you pick out the real penny? (Answer Below)

Question: We’ve seen pennies so many times--why is it so difficult to recognize which of these drawings accurately represents a penny?

Joseph T. Hallinan: Partly, it has to do with how our memory works. Our long-term memory, even for things we’ve seen thousands of times, is limited. Most of the time, we recall meaning but not surface details. It’s the same reason we remember faces, but not the names that go with them.

Q: Are there other real-world examples of this?

JTH: Sure. We just watched as Chief Justice John Roberts and President Barack Obama muffed the words to the Inaugural Oath—even though the oath has only 35 words and even though both men no doubt rehearsed it many times. It’s actually very hard to remember things verbatim. Take the National Anthem, for instance. You’ve sung it hundreds of times. But how many of the Anthem’s 81 words can you remember without singing it?

Q: How does this limitation lead to mistakes?

JTH: Because we think our memories are much better than they are, and rely on them more than we should. Consider how many times an eyewitness has mistakenly identified a criminal and you begin to see the significance of this type of error. Basically, we look but don’t always see.

Q: Alright then, we’ve waited long enough: which of the pennies above is the real McCoy?

JTH: That would be penny A. But when researchers conducted this experiment, fewer than half of the people in the study picked the right one.

(Photo © Andrew Collings)

From Publishers Weekly

A Pulitzer winner for his stories on Indiana's medical malpractice system, Hallinan has made himself an expert on the snafus of human psychology and perception used regularly (by politicians, marketers, and our own subconscious) to confuse, misinform, manipulate and equivocate. In breezy chapters, Hallinan examines 13 pitfalls that make us vulnerable to mistakes: "we look but don't always see," "we like things tidy" and "we don't constrain ourselves" among them. Each chapter takes on a different drawback, packing in an impressive range of intriguing and practical real-world examples; the chapter on overconfidence looks at horse-racing handicappers, Warren Buffet's worst deal and the secret weapon of credit card companies. He also looks at the serious consequences of multitasking and data overload on what is at best a two- or three-track mind, from deciding the best course of cancer treatment to ignoring the real factors of our unhappiness (often by focusing on minor but more easily understood details). Quizzes and puzzles give readers a sense of their own capacity for self-deception and/or delusion. A lesson in humility as much as human behavior, Hallinan's study should help readers understand their limitations and how to work with them.
Copyright © Reed Business Information, a division of Reed Elsevier Inc. All rights reserved.

More About the Author

Joseph T. Hallinan, a former writer for the Wall Street Journal, is a winner of the Pulitzer Prize and a former Nieman Fellow at Harvard University. He lives with his wife and children in Chicago.