the Amazon was once full of people and was depopulated, probably because of disease epidemics. So all those promoting a pristine Amazon are wrong. The Amazon was once farmed and traded with the tribes in the mountains. So when the greenies see them as the equivalent of Rousseau's noble savage are wrong: They were people who worked to support their families and had a complex (neolithic( culture...
and now we see even PBS has noticed this:
University of PENN museum lecture from about ten years ago noticed this too
