The Black Swan: The Impact of the Highly Improbable

Bestselling author Nassim Nicholas Taleb continues his exploration of randomness in his fascinating new book,?ÿThe Black Swan, in which he examines the influence of highly improbable and unpredictable events that have massive impact. Engaging and enlightening,?ÿThe Black Swan?ÿis a book that may change the way you think about the world, a book that Chris Anderson calls, “a delightful romp through history, economics, and the frailties of human nature.” See Andersons entire guest review below.?ÿ
Guest Reviewer: Chris Anderson

Chris Anderson is editor-in-chief of?ÿWired?ÿmagazine and the author of?ÿThe Long Tail: Why the Future of Business Is Selling Less of More.

Four hundred years ago, Francis Bacon warned that our minds are wired to deceive us. “Beware the fallacies into which undisciplined thinkers most easily fall–they are the real distorting prisms of human nature.” Chief among them: “Assuming more order than exists in chaotic nature.” Now consider the typical stock market report: “Today investors bid shares down out of concern over Iranian oil production.” Sigh. Were still doing it.

Our brains are wired for narrative, not statistical uncertainty. And so we tell ourselves simple stories to explain complex thing we dont–and, most importantly, cant–know. The truth is that we have no idea why stock markets go up or down on any given day, and whatever reason we give is sure to be grossly simplified, if not flat out wrong.

Nassim Nicholas Taleb first made this argument in?ÿFooled by Randomness,?ÿan engaging look at the history and reasons for our predilection for self-deception when it comes to statistics. Now, in?ÿThe Black Swan: the Impact of the Highly Improbable,?ÿhe focuses on that most dismal of sciences, predicting the future. Forecasting is not just at the heart of Wall Street, but its something each of us does every time we make an insurance payment or strap on a seat belt.

The problem, Nassim explains, is that we place too much weight on the odds that past events will repeat (diligently trying to follow the path of the “millionaire next door,” when unrepeatable chance is a better explanation). Instead, the really important events are rare and unpredictable. He calls them Black Swans, which is a reference to a 17th century philosophical thought experiment. In Europe all anyone had ever seen were white swans; indeed, “all swans are white” had long been used as the standard example of a scientific truth. So what was the chance of seeing a black one? Impossible to calculate, or at least they were until 1697, when explorers found Cygnus atratus in Australia.

Nassim argues that most of the really big events in our world are rare and unpredictable, and thus trying to extract generalizable stories to explain them may be emotionally satisfying, but its practically useless. September 11th is one such example, and stock market crashes are another. Or, as he puts it, “History does not crawl, it jumps.” Our assumptions grow out of the bell-curve predictability of what he calls “Mediocristan,” while our world is really shaped by the wild powerlaw swings of “Extremistan.”

In full disclosure, Im a long admirer of Talebs work and a few of my comments on drafts found their way into the book. I, too, look at the world through the powerlaw lens, and I too find that it reveals how many of our assumptions are wrong. But Taleb takes this to a new level with a delightful romp through history, economics, and the frailties of human nature.?ÿ–Chris Anderson