@auramun@anarchism.space I said nothing about genetic diversity being equal to race. I said race is a complex breakdown of your regional genetic origin. If most of your genes originated somewhere in africa, then you are considering closer to being african than some other region.
What is arbitrary is where exactly we draw the lines, northern african vs southern. Borders, and thus our choice of names for races, are certainly artifican. But the idea of race, as more of a spectrum, certainly is not.