CNet: Stephen Hawking says nomadic aliens might crush us.
Nick Bostrom also had an interesting take on this subject. His contention: if we’re not contacting aliens, there must be some challenge, some barrier that advancing civilizations hit, that rubs them out. The fact we’ve survived this long, means our greatest test is before us, not behind us. Worthy of many an hour of contemplation, that. Is it even possible to prepare effectively for an unknown extinction-level event?
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