Black Swans are not inconsequential anomalies, but a significant phenomenon that shapes the very world we live in. Many historical events that drastically impacted our socities and lives were actually Black Swan events. These incluse the 2 world wars, the fall of the Berlin Wall, the 11 Sep 2001 ...

For thousands of years, it was widely believed that all swans were white. Then in 1697, a Dutch explorer Willem de Vlamingh discovered black swans in Australia, debunking this universal “truth” overnight. The term “Black Swan” has since been used to describe the occurrence of a seemingly-impossib...

In Extremistan environments, there can be wild randomness and extreme deviations. Typically, there’re no physical constraints and no known upper/lower limits (e.g. knowledge, financial markets, e-book sales, social media “likes”). Thus, the outliers can make a big difference—if y...

• In Mediocristan environments, there’s a limit to the amount of randomness or deviation from the average. Inequalities exist, but they’re mild or controlled. Usually, there’re some physical constraints (e.g. height, weight, running speed) which limit the amount of variability. F...

Another fallacy Taleb describes is called the ludic fallacy. This one explains why we do such bad jobs at getting the right insurance policy, for example.

When faced with the task to assess risk in the real world, we usually ...

The author calls an even a "Black Swan" if it's unpredictable not because it's random, but because our outlook on what's possible was too narrow. Imagine you’d known about the 9/11 attacks in advance. You wouldn’t have been surprised. In some cases, a Black Swan is only a tragedy for a single per...