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What's really depressing is if you assume the number of communicating civilizations is 1 and make average lifetime of communicating civilizations be the free va
by Adrock 16y ago
What's really depressing is if you assume the number of communicating civilizations is 1 and make average lifetime of communicating civilizations be the free variable.
- khafra 16y agoYou might be interested in The Great Filter, although it probably won't make you feel any better: http://hanson.gmu.edu/greatfilter.html http://hanson.gmu.edu/greatfilter.html