@DrDanMarshall
I don't believe that idea of keeping sex private is a universal practice; it's more of a product of social norms enforced by hierarchical structures rather than a natural tendency.
Also, I don't believe that solidarity primarily stems from kin selection and imagined communities. Solidarity is based on shared collective interests. It is oppressive hierarchies that reinforce familial ties over broader social connections.
@Radical_EgoCom "I don't believe that idea of keeping sex private is a universal practice"
Talk to the anthropologists about that one, I just work here. I'm a bit hesitant about proclaiming that anything the anthropologists tell us is a human universal will magically go away come The Revolution. When it comes to things like that, I would like to see an existence proof first, y'know?
Kin selection: Nepotism is also on the list of human universals, unfortunately.