“ Whether that cultural habit is to reduce the incidence of inbreeding I've yet to find out, but it makes me wonder.”

That’s racist. “The only way these people are going to be able to stop fucking their cousins as if they come up with a naming system that makes it extremely clear who is related to who.” There are probably other explanations other than being inbred as to why they do this. Like how some people go by Junior or Senior. Do you think that’s to prevent inbreeding also?