What makes us human?
Charles Darwin brought us the concepts of survival of the fittest and natural selection. Anthropologists for decades argued what made us "human" was tool-making. Now that we know that Chimpanzees make tools some other definition is necessary.
Where survival of the fittest for humanity is concerned, it is far more about creating paradigm shifts that moves the collective mass of humanity forward, then genetic material. Do we really care about the blood line of Artistotle or his ideas?
Evolution for humanity is more about mental and spiritual evolution than evolution of our physical bodies.