When we talked with historian Yuval Harari, the best-selling author of Sapiens, Homo Deus, and 21 Lessons for the 21st Century, the conversation was so wide-ranging and so smart that we just couldn't bear to leave any of it behind on the cutting room floor. So here's the full, unedited interview on a range of topics including why our society has fallen so hard for the myth of trickle-down economics.