Intelligence of Humankind

Inspired by Dread Pirate Robert's post on New Dharma Bums...

I must wonder if our creative use of technology is so shortsided in an effort to make a buck that we don't think through implications for the future.

Somehow past cultures in both the "Old World and New" managed to thrive for thousands of years; leaving behind mysteries that we are just now beginning to fathom.

And perhaps most amazing, how did Precolumbian native Americans learn how to turn practically barren tropical rainforest soil into hotbeds of horticulture?
http://cogweb.ucla.edu/Chumash/Population.html Reference Charles Mann's "1491"

PS shot from our trip in 1999 - Khufu's Pyramid as seen from Sphinx Temple