The Black Swan: The Impact of the Highly Improbable by Nassim Nicholas Taleb is one of those books that can completely change the way you see the world. It talks about the unknown unknown, the black swan, the highly improbable unpredictable event that changes the world and which we will we later try to explain away.
You believe all swans are white. Each time you see a white swan, it’s just confirmation of your belief. People can see millions of white swans, but it only takes one black swan to prove everything wrong.
I first heard of this book on Talk of the Nation’s Interview with Taleb, it stayed in my mind throughout my adventures in Thailand, and upon my return I finally got my hands on a copy and fell in love with it.