Dr. Bovary planned to cure a cripple and become rich and famous. Neither happened. For any species to endure it is most useful to retain some original pure stock and the natural variants. Consider the potato famine. That is why old species of plants are kept in a seed bank. Today medical science knows there is big profits in repairing defective humans and aborting perfectly good ones. The defective ones only naturally can be expected to reproduce and as they do, provide more clients. There is no easy answer, but there is a problem. Humans are too interconnected to actually evolve into new subsets.
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