Electronic/World Wide Web>Blog: Monroe, Randall (2011), 65 Years, xkcd, Retrieved on 2011-06-02Source Material [xkcd.com]
Folksonomies: exploration space flight Memes
02 JUN 2011
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.Envisioning a universe filled with the planetary grave sites of civilizations that did not see the economic worth of space exploration.