The Black Swan book summary

Book Summary

  10 minute read


Please login to rate.

Book Summary - The Black Swan: The Impact of the Highly Improbable by Nassim Nicholas Taleb

Key Insights

The events that shift the course of history for an economy, a country, or the whole planet are known as “black swans.” They cannot be predicted, although you can explain them in retrospect. 

Humans don’t generally do well with chaos, randomness, and unpredictability, but the things that make the biggest impact are not the ones we see coming. Our brains try to make sense of the information and trick us into seeing patterns and causality where they don’t exist. 

Black swans aren’t necessarily bad, but the things that rock the world (think 9/11, World War II, pandemics) cannot be predicted. It may be hard to accept that you can’t see the big, terrible things coming.

You have to learn to live with the unknown unless you want to delude yourself. Look for good black swans and appreciate...

Get the best of Sumizeit

Sign up to see the full content for this book summary. Creating an account is free. You get 3 free summaries. No credit card required.

Then, upgrade to a Sumizeit Premium Subscription and get unlimited access to our large library of text, audio, and video summaries.


Our lives and society are filled with randomness. The most extreme form of randomness is the black swan.

Black swans are unpredictable. Because of their extreme nature, you don’t see them coming until they’re already there. Black swans are consequential. They have a widespread impact or a curve-breaking magnitude. Black swans are explainable. But this is only in retrospect once you have the benefit of hindsight.

Some randomness is not that impactful and you don’t really have to worry. You can control and predict to a certain degree in these areas free of black swans. This is the world of Mediocristan.

If you’re in Extremistan, you have to be willing to challenge your beliefs and look for evidence contrary to your theories. There are opportunities for success like J.K. Rowling and Bill Gates, but there is also the potential for mass devastation through war, terrorism, and pandemics.

It is hard to grapple with the unknown, especially because it can change everything so quickly. But you have to accept this truth to be as prepared as possible while also appreciating what you have.

About the Author

Nassim Nicholas Taleb is a statistician and an academic. Born in Lebanon, he first attended a French school in Beirut before getting degrees from the University of Paris. He then got his MBA from the University of Pennsylvania’s Wharton School before returning to the University of Paris for his Ph.D. in Management Science.

Taleb’s career started in the finance world. He worked as a hedge fund manager, options trader, risk analyst, and derivatives trader. Taleb also created an investment strategy to protect against black swans. His statistics and investment knowledge has set him up to be independently wealthy.

Stepping away from an active investment role, Taleb moved into academia. Working at major institutions around the world, including NYU, Oxford, and London Business School. 

Taleb has been controversial in his writings and public positions. He has called for the cancelation of the Nobel Prize in Economics and applauded the collapse of Lehman Brothers.

Black Swan is the second book of Taleb’s group of philosophical works addressing uncertainty. This group is collectively known as Incerto. He has also has several other works in the field of statistics.

Check out The Black Swan book summary on mobile

Download the free Sumizeit mobile app to read, listen to, or watch The Black Swan book summary anytime, anywhere.

sumizeit app store page   sumizeit play store page

Have feedback?

Contact us if you have feedback about this book summary.

The Black Swan