| http://www.w3.org/ns/prov#value | - But again, you assume collapse due to material exhaustion, which, even for a very OLD civilization would not universally be the case, especially one that migrated to other planets.Why would a planet be colonized in the first place if there were insufficient materials for self support?By the way: There is no exhaustion of copper or metals, as any gaze into a junk yard will reveal.
|
