Really great post here @logic, I really enjoy these historical/anthropological posts. I think in part because I have never really been exposed to this sort of thing in my own education! I have always loved history, and the thought of exploring to find lost civilizations is one that seems very appealing in the back of my mind (though I think I can do more good by continuing to be a researcher in biotech). Thanks for posting this stuff, it really entertains me :)