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The only way to learn mathematics is to do mathematics.

"I write about tyrants not because I fear them, but because I refuse to let them own my imagination."

因果推理需要仔細思考分析背后的假設。

I used to think the world was broken down by tribes. Then I thought it was broken down by rich and poor. Then I thought it was broken down by stupid and smart. But I know now that it is broken down by people who are alive and people who are dead.

Models can lower your risk…….. It reduces the daily aggravation. With old-fashioned stock picking: “One day you feel like a hero. The next day you feel like a goat. Either way， most of the time it’s just luck. “We don’t override the models.

把公司當成一個產品來打造。