A black swan is an event, positive or negative, that is deemed improbable yet causes massive consequences. In this groundbreaking and prophetic book, Taleb shows in a playful way that Black Swan events explain almost everything about our world, and yet we—especially the experts—are blind to them. In this second edition, Taleb has added a new essay, On Robustness and Fragility , which offers tools to navigate and exploit a Black Swan world. *2nd Edition, With a new essay: "On Robustness and Fragility"