Comment by pigpop

No cohesive civilization on earth has been able to continue uninterrupted for 1000 years, our chances aren't as good as you think they are especially since our current civilization is showing all of the signs of being over the hill and accelerating in its decline. Technological advances can be lost and the capacity of a civilization to accomplish far reaching goals can stall and degrade and eventually cease all together. Anyone who doesn't think we're on a ticking clock is either hopelessly optimistic or ignorant of history, probably both.