thinking, fast and slow.

About the Author

Daniel Kahneman is an Israeli-American psychologist and economist notable for his work on the psychology of judgment and decision-making, as well as behavioral economics, for which he was awarded the 2002 Nobel Memorial Prize in Economic Sciences.

With Amos Tversky and others, Kahneman established a cognitive basis for common human errors that arise from heuristics and biases, and developed prospect theory, which gave birth to the book Thinking, Fast and Slow.

Literature Notes

In the begnning of the book, Daniel introduces the idea of our brain divided in 2 distinct systems:

These 2 systems become “characters” in the book, which make them relatable, and easier to connect the further information.

Our thoughts can be primed.

Cognitive Ease

Whenever we’re conscious, our brain keeps constantly analyzing our state, answering questions like “is anything new going on? Is there any effort needed for the task at hand? Should attention be redirected?”

These assessments happen in “System 1”, and one of their function is to determine if “System 2” needs to take action.

— Page 59, “Cognitive Ease”

Anything that makes it easy for the associative machine to run smoothly will also bias beliefs.

“A reliable way to make people believe in falsehoods is frequent repetition. Because familiarity is not distinguished from the truth.”

— Page 62

People are more prone to making mistakes when they’re at cognitive ease — when they’re comfortable. That’s because “System 1” is more in charge.