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by namanyayg 2327 days ago
Any that involves interaction with multiple people; you cannot predict others, especially since most people don't always act fully rationally.
2 comments

I think people say that others dont act rationally, when really they just don't understand the other person's goals and how their behaviour contributes to their goals.

If i pass up $100 to get a burger, am i acting irrationally? It depends if i'm hungry. It depends how much $100 means to me (Am i bill gates?). Its impossible to say from the outside. I'm convinced much behaviour is basically the same except much more complex with multiple conflicting priorities.

No, people really just don't think rationally. Read Daniel Kahneman. It's been studied extensively.
No one always acts fully rationally