Both videos are pretty good.
From: Greg Bear
For your consideration...
From: ryan costa
we'll never go extinct. unless we screw up the planet enough for most mammals to go extinct very fast.
We are very altruistic, and very intelligent. This is tempered with varying distributions of rapaciousness, obsessive ambition, and basic survival instincts.
from an economic perspective, the problem isn't supplying unlimited wants. it is coming up with enough work to keep people busy. to this end, enormous thought and energy is put into encouraging people to want more. This occasionally leads to intense spot shortages of resources.