02 JUN 2011 by ideonexus
Randal Monroe on Space Flight
The universe is probably littered with the one-planet graves of cultures which made the sensible economic decision that there's no good reason to go into space--each discovered, studied, and remembered by the ones who made the irrational decision.
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Envisioning a universe filled with the planetary grave sites of civilizations that did not see the economic worth of space exploration.
