[kiriakasis]

> which is an evolutionary dead end

Just to provide a different perspective

In this contest the likely evolution of Home Modernus would be through a slight abuse of eugenics and genetic manipulation dictated by a sense of aristocratic entitlement. This is likely to produce (almost literally) peacock tails in the higher humans. Evolutionary dead ends happens indeed when traits and behaviours necessary for the survival of an healthy community lose their utility against the environment (in the case of peacock the vivid colours are a signal of an healthy individual able to provide more that enough food).

Meanwhile Home "Animalis" lives outside the upper society, but close to advanced and cheap technology (old by that time standard, but new for us) essentially in a condition not distant from the countryside of many developing nations today.

In the long term I would bet on the "lower" race