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The Drunkard's Walk: How Randomness Rules Our Lives Paperback – May 5 2009

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Product Details

  • Paperback: 272 pages
  • Publisher: Vintage; Reprint edition (May 5 2009)
  • Language: English
  • ISBN-10: 0307275175
  • ISBN-13: 978-0307275172
  • Product Dimensions: 13 x 2 x 20.2 cm
  • Shipping Weight: 227 g
  • Average Customer Review: 4.0 out of 5 stars  See all reviews (21 customer reviews)
  • Amazon Bestsellers Rank: #9,283 in Books (See Top 100 in Books)
  • See Complete Table of Contents

Product Description

From Publishers Weekly

A drunkard's walk is a type of random statistical distribution with important applications in scientific studies ranging from biology to astronomy. Mlodinow, a visiting lecturer at Caltech and coauthor with Stephen Hawking of A Briefer History of Time, leads readers on a walk through the hills and valleys of randomness and how it directs our lives more than we realize. Mlodinow introduces important historical figures such as Bernoulli, Laplace and Pascal, emphasizing their ideas rather than their tumultuous private lives. Mlodinow defines such tricky concepts as regression to the mean and the law of large numbers, which should help readers as they navigate the daily deluge of election polls and new studies on how to live to 100. The author also carefully avoids veering off into the terra incognita of chaos theory aside from a brief mention of the famous butterfly effect, although he might have spent a little more time on the equally famous n-body problem that led to chaos theory. Books on randomness and statistics line library shelves, but Mlodinow will help readers sort out Mark Twain's damn lies from meaningful statistics and the choices we face every day. (May 13)
Copyright © Reed Business Information, a division of Reed Elsevier Inc. All rights reserved. --This text refers to the Hardcover edition.


“Mlodinow writes in a breezy style, interspersing probabilistic mind-benders with portraits of theorists.... The result is a readable crash course in randomness.”—The New York Times Book Review“A wonderfully readable guide to how the mathematical laws of randomness affect our lives.”—Stephen Hawking, author of A Brief History of Time"[Mlodinow] thinks in equations but explains in anecdote, simile, and occasional bursts of neon. . . . The results are mind-bending."—Fortune"Even if you begin The Drunkard's Walk as a skeptic, by the time you reach the final pages, you will gain an understanding-if not acceptance-of the intuitively improbable ways that probability biases the outcomes of life's uncertainties."—Barron's“Delightfully entertaining.”—Scientific American “A magnificent exploration of the role that chance plays in our lives. The probability is high that you will be entertained and enlightened by this intelligent charmer.” —Daniel Gilbert, author of Stumbling on Happiness“Mlodinow is the perfect guy to reveal the ways unrelated elements can relate and connect.”—The Miami Herald“A primer on the science of probability.”—The Washington Post Book World“Challenges our intuitions about probability and explores how, by understanding randomness, we can better grasp our world.” —Seed Magazine“Mlodinow has an intimate perspective on randomness.”—The Austin Chronicle

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28 of 28 people found the following review helpful By G. Poirier TOP 50 REVIEWER on May 16 2008
Format: Hardcover
I just love books like this - especially when they're as well-written as this one. The author, a physicist, proceeds to show the reader how randomness plays a much greater role in everyday life than one might think. As he discusses the basics of probability and statistics, he provides wonderful illustrations from fields as wide-ranging as sports, medicine, psychology, the stock market, etc., etc. He does an excellent job in driving home the fact that the true probability of events is not intuitive. Perhaps because of this anti-intuitiveness, I had to read a few paragraphs more than once to allow the point being made to sink in. One enigma that is particularly well explained is the Monty Hall (Let's Make a Deal) problem. The writing style is clear, accessible, very friendly, quite authoritative, engaging and often very witty. This book can be enjoyed by absolutely everyone, but I suspect that math and science buffs will savor it the most. By the way, the math-phobic need not fear: the book does not contain a single mathematical formula.
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2 of 2 people found the following review helpful By Linda Bulger on July 11 2010
Format: Audio CD
For those of us who trust our instincts, this book will show us the error of our ways. You may wonder whether a book about probability could hold your interest but physicist and author Leonard Mlodinow starts out gently and builds his argument that life is more random than we ever knew. At the same time he offers some reasoning tools that can improve our decision-making.

The Drunkard's Walk: How Randomness Rules Our Lives is structured loosely around a history of probability theory. Some of the biographical material about early thinkers in the field--Cardano, Fermat, Pascal to name a few--is essential to the story of how our modern concepts developed, but more forgettable than the concepts arising from their work. Mlodinow uses a wide variety of examples to illustrate the availability bias, the meaning of the sample space, and the law of large numbers; the latter states that the larger the sample, the more the average converges toward the expected value. The more times you toss a coin, in other words, the closer the number of heads will be to 50% of the tosses. That's one you could assume through intuition, but did you know that it took Jacob Bernoulli 20 years to prove it mathematically? And while the probability of flipping five heads in a row is ... well, not small (this is not a book about math), the odds of the sixth coin toss being a head is still 50%.

Mlodinow makes fairly interesting work of the "Monty question:" if you are on "Let's Make a Deal" and choose door #1 for a grand prize, and before revealing your choice Monty Hall opens door #2 to reveal a goat, then offers you the chance to switch to door #3, should you switch?
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8 of 9 people found the following review helpful By Donald Mitchell #1 HALL OF FAMETOP 50 REVIEWER on Aug. 13 2008
Format: Hardcover
Have you ever flipped a coin 100 times to see the sequence of heads and tails that comes up? If you have, you know that there can be long streaks of heads and tails. Random results that end up 50-50 don't look that way in the short term.

Human perception is such that we like to find patterns where none exist. I remember the CEO of a company I worked for would draw a trend line through one data point with great authority, totally unaware of what he was doing.

More often, we judge by samples of behavior and time that are too short to be representative. Professor Mlodinow does a good job of showing how executives are often fired just before they get their best results, and how seldom the new executive does any better than the prior one.

In sports, we get all excited about streaks. Professor Mlodinow dampens that enthusiasm by pointing out that like streaks can occur randomly. We need to check to see if the streak exceeds the expected degree of variation before deciding that something significant has taken place. (But don't stop cheering on your favorite team and players.)

The book also provides lots of thumbnail sketches of the human side of those who have advanced the science and math behind our ability to measure and understand randomness. In fact, I don't recall a book on this subject with better anecdotes about the scientists and mathematicians. That's the reward in this book if you already know about randomness.

If you know nothing on the subject, this book is the gentlest possible introduction.

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1 of 1 people found the following review helpful By Robert Moore on May 5 2014
Format: Audio CD Verified Purchase
I enjoyed this book very much as it challenged and sharpened my ability to reason. Forget Luminosity, get your brain cells humming by reading this book. I had to go back a re-read most chapters to really allow the logic to sink in and be able to explain it to others.
This book may be easier if you had some basic understanding of statistical fundamentals, but a good grasp of problem solving would suffice.
I recommend this for anyone who wants to improve their ability to recognize "junk" stats from sound reasoning.

Love the OJ example!
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4 of 5 people found the following review helpful By Stephen Pletko TOP 50 REVIEWER on Jan. 14 2009
Format: Hardcover

"I have tried in this book to present the basic concepts of randomness, to illustrate how they apply to human affairs, and to present my views that its effects are largely overlooked in our interpretations of events and in our expectations and decisions. It may come as an epiphany merely to recognize the ubiquitous role of random processes [including chance and uncertainty] in our lives; the true power of the theory of random processes, however, lies in the fact that once we understand the nature of random processes, we can alter the way we perceive the events that happen around us."

The above is found in this revealing, engaging, and readable book by Leonard Mlodinow, PhD (physics) who now teaches about randomness to future scientists at the California Institute of Technology. (He also co-authored with Dr. Stephen Hawking the book "A Briefer History of Time.")

This book's title comes from a mathematical term describing random motion (such as the paths molecules follow as they fly through space, bumping and being bumped by, their sister molecules).

All chapters are meant to lead up to the book' final chapter (that has the same title as the book's title). Generally, the beginning chapters look in a historical context at basic but important concepts in probability theory and statistical inference.

(Probability is a numerical value that measures, estimates, or predicts the degree of uncertainty in which an event will occur. Statistical inference {also called inductive statistics} deals with inferences about a population based on a sample {that is, based on limited data} of that population.
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