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The Great Filter theory suggests humans have already conquered the threat of ... - io9
URL: http://io9.com/5970501/the-great-filter-theory-suggests-humans-have-already-conquered-the-threat-of-extinction
Submitted: Sat Dec 22 2012
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CT: UFOSeek News 2012: The Great Filter theory suggests humans have already conquered the threat of ... - io9
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It's a notion that's often invoked to explain why we've never been visited by extraterrestrials. But there is another possible reason for the celestial silence. Yes, the Great Filter exists, but we've already passed it. Here's what this would mean ...