Status Updates From 政治秩序的起源：从前人类时代到法国大革命

I am really enjoying the slow read .. Chinese political history is interesting

Possible flaw in logic: Fukuyama claims it is not obvious why you’d cooperate with a 4th cousin instead of a familiar nonrelative. He claims this was caused by religious belief, the worship of dead ancestors, but why can you call this behavior found in every tribe around the world not biological and just a religious belief? Seems like a cop out to just label something as religious if it happens every time