Originally Posted by tore

How did I single out Africans for exclusion?

Originally Posted by tore

Africa represents a wealth of humanity's genetic diversity and that should of course be represented in humanity's survivist colony. Go back far enough and we're all africans.

The close family comment may be a little hard to get for people who don't study biology, but evolution rewards the procreation of genes. You give your genes to your kids which pass them on to their kids and so, in a way, what makes you you will still exist in the future. This has implications like we tend to be nicer to people whom we share genes with. Because humans are not that genetically diverse, that may well explain in part why we are so seemingly altruistic and good at cooperating and it also means that the people going away on that ship carry with them part of what makes you you. Probably more so if a representative from your nation, ethnic minority, etc, is on that ship.

So, if they are "sufficiently diverse", I would regard the group of colonists going as someone who ensures not just the survival of themselves (which I expect is what leads to comments like "shoot them into a black hole"), but all of us.