Anyone who managed to reach the edge could fall off the earth. It may seem bizarre now, but for ancient civilizations and even the medieval church, it was an almost sacred knowledge. It is popularly believed that the Greek philosopher Pythagoras established that the earth was in fact spherical. But it was a long journey, one riddled with many sacrifices and executions of astronomers who dared to speak up, that round earth became common knowledge. Our assumptions are our way of making sense of the bewildering world. But it is hard to replace long-held beliefs with new information, especially that which is based on facts.

Fast forward to the modern times, Nassim Nicholas Taleb, based his whole theory on this particular discovery. He even named it after the bird, Black Swan. According to him, the Black Swan events have three defining principles;

·         They are highly impactful

·         Completely unexpected/unpredictable

·         After it has occurred people try to explain it


Taleb says that our entire history has been shaped by Black Swans, from the World Wars to fashion revolutions, nobody predicted these, and nobody could predict these. In fact, he says, that even inventions are just Black Swans and a lot less about design & plan.

We spend a lot of our time trying to predict Black Swans, but as we know at the very nature of it, Black Swans are unpredictable. Instead, we should put our whole energy in trying to know things we don’t know, the known unknowns.