Ed Barnhart: uncertainty

Transcript context

…Sure. But the facts that he’s basing that on are that terra preta are the huge geometric earthworks, are the ever-increasing evidence of them. They are now from the bottom of Bolivia to Guyana. They’re everywhere. Every time we open up the jungle, we find these big works. So yes, there was a vast civilization that was there. How advanced they were is a question and also a perspective thing. Graham really focuses in on what we don’t know and what could be. Just to educate me, what’s the key idea that he’s proposing that you disagree with? Is it it was the level of advancement the civilization was, or how large and centralized it was?…

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