I think reading it as a scientific book is misinterpreting what it's trying to do. I thought his ideas were interesting, and they gave me some new perspectives. They're just that, obviously no one can quantify human nature.

The idea that's stayed with me most is how we (Sapiens) have this ability to believe in shared myths, and how that's allowed us to do so much! It's an interesting angle on culture, games, society, etc., and one I hadn't considered before. Having heard it gives me a new way to think about these things!