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thundara  ·  4679 days ago  ·  link  ·    ·  parent  ·  post: Can you build a human body?
Another note, too, is that by having new generations replace the old, we allow evolution to do its work and select against bad genes. By prolonging the life of one generation, we lose out biological selection to do its work. In a way, cancer and other aging diseases are a benefit to our species in the long term because they prevent the older generation from eclipsing the young with their resource usage.