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So you cover your ears.
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In 2001:A Space Odyssey,
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we get some kind of indication
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that there's life on another planet.
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It's all very mysterious and we
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send off a spaceship to investigate the markings,
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the radio signals from the other place.
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This is a very important mission
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and so there is a computer program named Hal
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that helps run the ship
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and takes a lot of the
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burdens off of the part of the human astronauts who are on the ship.