A new treatment that blocks an aging-related protein restored lost cartilage in old mice and helped prevent arthritis after knee injuries. Human cartilage samples showed similar signs of regeneration, raising hopes for a future drug that could repair joints instead of replacing them.
We ceased adhering to ‘survival of the fittest’ the moment we discovered medicine, so that’s plain nonsense. Also, given the time scales that evolution works on, it’s just entirely irrelevant.