Neil deGrasse Tyson
Design Matters with Debbie Millman
00:00
The Lucky One to Be Alarmed
The total number of people who have ever been born is about 100 billion. Yet the genetic code that generates viable versions of us is capable of at least 10 to the 30 variations. So far, our branch of the tree of life has produced no more than point. Most people who could exist will never exist. Each of us for all practical purposes is unique in the universe now and forever.
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