Most mutations are entirely harmful. Those are included in the ones that we're promoting by saving young children. We've evolved to this point without saving ch

Most mutations are entirely harmful. Those are included in the ones that we're promoting by saving young children. We've evolved to this point without saving children from them. So have all species. Surely the continual re-guiding of the evolutionary path is important to prevent a species from degenerating into something that's worse in every way? If we were to remove all selection pressures, the species would surely lose all kinds of qualities we like - not just less able to stay alive but less intelligent, more often deformed in painful ways, less tolerant to various foods, shorter life, less fertile, etc. I think some ever-present evolutionary pressure is needed to fight off entropy. You're talking about specialization, which is quite different from random damage. Accordingly, we should keep the races distinct if we want to preserve those qualities, in the same way ecologists try to prevent closely related species from interbreeding and diluting their advantages. Though perhaps it doesn't matter anymore with housing, clothing, medicine, sun screen, etc. that allow blacks to safely live in Norway/etc.