THE BLACK SWAN is a concept that will change the way you look at the world. Black Swans underlie almost everything, from the rise of religions, to events in our own lives. A Black Swan is a highly improbable event with three principle characteristics: it is unpredictable; it carries a massive impact; and, after the fact, we concoct an explanation that makes it appear less random and more predictable than it was. The astonishing success of Google was a black swan; so was 9/11. Why do we always...