It's a great book. So is Homo Deus. I like Harari's focus on how fictions, myths, or noble lies keep the masses cooperating. I use his idea of social branding here:

https://medium.com/interfaith-now/the-christian-ethos-and-the-primacy-of-aesthetic-meaning-656817ee6537?sk=130c56c754014424e12840c94e485a1a