It's a little dense and a bit meandering at times, but the core idea behind it: we have a strong bias in believing that civilization comes in stages. We believe we go 'hunter/gatherer/primitive' -> agriculture -> 'real' civilization. Basically, this is totally false.
Not only is it totally false, but one of the reasons we might have this bias is because, while the native Americans were being eradicated, Western thinkers and theologians had to justify why Western civilization was 'better', despite native Americans basically giving Westerners the seeds for individual liberties and social blueprints for the Western Enlightenment...
It really uprooted my deepest beliefs about human history, civilization, and (most importantly for me) what I believe "the future" should look like. Mind-expanding for sure.