Evolution produced a system very unlike anything a human might engineer. Rather than a minimalist system of finely tuned parts acting in concert, living system is full of redundant mechanisms, with overlapping functions and excess baggage that had been carried by organisms for millions of years. If evolution was constantly refining life through natural selection, why would there be an array of unnecessary repetitious elements in so many aspects of life? By looking at specific genetic and biochemical examples of redundancy, it becomes clear that redundancy is central to the survival of life.
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