| Key Principle | Meaning | | :--- | :--- | | | Losing $100 hurts about twice as much as gaining $100 feels good. | | Diminishing Sensitivity | The difference between $0 and $100 feels huge; $900 to $1,000 feels small. | | Reference Point | You judge outcomes as gains or losses relative to your current state , not as absolute wealth. |
This is your autopilot. It’s intuitive, emotional, and operates with almost no effort. It’s what allows you to read a person's facial expression or complete the phrase “bread and...” instantly. Thinking- Fast and Slow
The greatest lesson of Thinking, Fast and Slow is humility. You are not a singular, rational CEO running a tight ship. You are two different people sharing a skull: a reckless, intuitive, fast-thinking lizard (System 1) and a sedentary, logical, slow-thinking professor (System 2). | Key Principle | Meaning | | :---