I bought this book about two years ago, started reading it and put it in a wicker basket at the side of the couch. It got covered by other books, but like yeast it worked its way to the surface and into my consciousness and left its thumb-print on me, which will fade, indeed, has faded, because I’m pretty dumb. By now, of course, Yuval Noah Harari has a follow-up book out, which I also intend to buy (and leave in a wicker basket by the side of...