“The Fermi Paradox is an observation by the famous physicist Enrico Fermi, who created the first controlled atomic chain reaction under the auspices of the Manhattan Project, that if technological civilizations have even a slight probability of evolving, their presence should be visible throughout the universe. [T]he sky should be filled with the cosmic equivalent of roaring traffic and flashing neon signs. But instead we perceive a great silence.”

— Hans P. Moravec, Mind Children: The Future of Robot and Human Intelligence