Systems | The Beginning of Infinity 3 of 5 | David Deutsch
The Gospel of Crazy Eye Dog
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DNA Replicators - The Genetic Code
DNA molecules reach a certain level of universality. At that moment, the system was coding for nothing more complex than primitive single-celled creatures and some rules. Yet virtually all subsequent organisms on Earth to this day have not only been based on DNA replicators, but have used exactly the same alphabet of bases grouped into three-based words with only small variations in the meaning of the words.
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