@Jens_Rasmussen I have some AnCap priors that I didn't explain to you properly apparently. If you are split on a decision, say building a library, you just go your separate ways and only those who paid for the library can use it afterwards. This doesn't mean you embargo each other. You don't need an all or nothing attitude with every decision, that's just for governing flawed people.

>I do not believe violent tendensies on a genetic level can be directed only at strangers
Why?
High empathy plus high in-group preference means the person would be horrified to hurt an innocent, especially one that looks like him.
>so it has to be cultural
there is no 'cultural', psychological traits are genetic and culture arises from biology.