6월 20일

p.37
Avoid taking advice from someone who gives advice for a living, unless there is a penalty for their advice.

p.37
One, the fool, takes risks he doesn’t understand, mistaking his own past luck for skills, the other, the crook, transfers risks to others. 

p.38
So there is this other instance where filtering plays a role: fools of randomness are purged by reality so they stop harming others. Recall that it is at the foundation of evolution that systems get smart by elimination.

-> 이 부분이 너무 불편하다. 이 아저씨에게서 사회진화론과 파시즘 냄새가 난다.

p.39
The doer wins by doing, not convincing.

p.39
You may not know in your mind where you are going, but you know it by doing.

p.39
Revelation of preferences is best understood by the betrothed: 

a diamond, particularly when it is onerous to the buyer, is vastly more convincing a commitment (and much less reversible) than a verbal promise.

p.39
Forecasting (in words) bears no relation to speculation (in deeds).

p.39
Because what matters in life isn’t how frequently one is “right” about outcomes, but how much one makes when one is right. Being wrong, when it is not costly, doesn’t count—in a way that’s similar to trial-and-error mechanisms of research.