A friend recently commented that he had just completed "Guns, the Germs and Steel" (which admittedly is an "old" Jarred Diamond) book, which I knew I had in my collection, so I dutifully checked my collection of four (yes I know there are others) and I see that was still on my to do list (see below, the pile is only only 50% done, "The Third Chimpanzee" and "Upheaval" done, "Guns Germs and Steel" along with "Collapse" still to do):