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In the vision of the dream I once imagined myself searching for other civilizations in the cosmos. Among a hundred billion galaxies and a billion trillion stars, life and intelligence should have arisen in many worlds; some worlds are barren and desolate. On them life never began or may have been extinguished in some cosmic catastrophe. There may be worlds rich in life not yet evolved to intelligence and high technology; there may be civilizations that achieved technology and then promptly used it to destroy themselves; and, perhaps, there are also beings who learn to live with their technology and themselves, beings who endure and become citizens of the cosmos.

Immersed in these thoughts, I found myself approaching a world that was clearly inhabited, a world I had visited before. I saw a planet encompassed by light and recognized the signature of intelligence. But, suddenly, darkness — total and absolute.

In my dream, I could read the “Book of Worlds”, a vast encyclopedia of a billion planets within the Milky Way. What could the galactic computer tell me about this now darkened world? They must have survived some earlier catastrophe. Their biology was different from ours. High technology. I wondered what those lights had been for; there must have been signs they were in trouble. The possibility of survival in a century — less than one percent, not very good odds. Communications interrupted. Their world society had failed; they had made the ultimate mistake. I felt a longing to return to earth.

The television transmissions from earth rushed past me, expanding away from our planet at the speed of light. Then suddenly — silence, total and absolute. But the dream was not yet done.

Had we destroyed our home? What had we done to the earth? There had been many ways for life to perish at our hands; we had poisoned the air and water; we had ravaged the land. Perhaps we had changed the climate. Could it have been a plague or nuclear war? I remembered the galactic computer. What would it say about the earth?

There was our region of the galaxy; there was our world. I had found the entry for earth: HUMANITY: THIRD FROM THE SUN. They had heard our television broadcasts and thought them an application for cosmic citizenship. Our technology had been growing enormously (they got that right). Two hundred nation states, about six global powers, the potential to become one planet. Probability of survival over a century — here, also, less than one percent. So, it was nuclear war, a full nuclear exchange.

There would be no more big questions, no more answers. Never again a love or a child; no descendents to remember us and be proud; no more voyages to the stars, no more songs from the earth.

I saw east Africa and thought, “a few million years ago we humans took our first steps there. Our brains grew and changed. The old parts began to be guided by the new parts, and this made us human — with compassion and foresight and reason. But, instead, we listened to that reptilian voice within us, counseling fear, territoriality and aggression. We accepted the products of science; we rejected its methods”.

Maybe the reptiles will evolve intelligence once more. Perhaps, one day, there will be civilizations again on earth. There will be life, there will be intelligence; but there will be no more humans — not here, not in a billion worlds.

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- from the transcript of the final program in the Carl Sagan’s Cosmos television series (1980)

(via tribeofthestrange)

Source: cooperativeindividualism.org
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