2. When you help a stranger, they often say “God bless you.” I generally want to say something similar when a stranger helps me. This is evidence for the hypothesis in the book Sapiens that what made Homo Sapiens make huge societies was that our brains were developed enough to think of a God that unifies us.

2b. Ah but then you mean God is a human creation? Not necessarily. It may be that after some point in our evolutionary development we are not only able to connect with God, but to articulate and communicate this connection with other beings. And from here is that we can develop societies.

1. action in mass is partially explained by credit assignment. Why is it that if someone leaves their bike unlocked then it is more probable for another person to leave their bike unlocked? It is not only that people follow what other people do; in this case, the chance of having their bike stolen decreases if there are more bikes. Also: encouraging other people to do the same thing as you is also explained by this.

0. In many revolutions or wars, they destroy libraries, museums, and art. Does it ever make sense to destroy? Would any correct ideology destroy human knowledge?

-1. Does capitalism work because there is no single person with most of the power? In communist China, Mao replaced most of the people in the power many times to direct China in whatever way he wanted. Stalin did a similar thing in the USSR. Current Singapore seems a counterexample. The problem is that having the power centralized for long terms means that none would stop the presidents from doing wrong and uninformed actions.

-2. I’ve seen people moving to a country with a different culture than back home but trying to keep their home culture without a change. On the other hand, I moved to a different country thinking I was a “citizen of the world,” that I didn’t need my culture, and that being with people from my culture was not challenging myself enough. Both extremes miss the point. I am an Argentinean in New York. I am not a New Yorker in New York or an Argentinean in Argentina.

-3. Try to recognize what the place you are at is very good at and do it.