It seems that we are completely alone in the universe. But simple reasoning suggests that there should be an abundance of alien civilizations. Maybe they're all out there, but they are keeping their distance. Welcome to the zoo (hypothesis). The story goes that in the summer of 1950, eminent physicist Enrico Fermi was visiting colleagues …
It seems that we are completely alone in the universe. But simple reasoning suggests that there should be an abundance of alien civilizations. Maybe they're all out there, but they are keeping their distance. Welcome to the zoo (hypothesis). The story goes that in the summer of 1950, eminent physicist Enrico Fermi was visiting colleagues …
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