To all the people who consider these ideas criminal, a little thought experiment: A tribe has been discovered that is a close approximation of Homo heidelberge

To all the people who consider these ideas criminal, a little thought experiment: A tribe has been discovered that is a close approximation of Homo heidelbergensis. They have basic language (100 words or so) and craft brutish tools, but, whatever you do, do not advance further than a 10 year old Homo sapiens in most areas of their mental development, however are way more aggressive and physically strong. Babies adopted into H. sapiens show improvement, but still markedly fall behind, never able to learn to read. What should the public policy with regards to these people be? Should they be considered sui juris and generally held to the standards of the rest of the world? Should they be isolated and forbidden for contact? Alternatively, a gene has been discovered in 0.01% of humans that, if present in 2 copies, produces an Einstein of sorts, less childhood problems. Should the carriers of the gene be allowed to seek each other out? What should be the policy towards the lucky 25% of their children?