Thanks, looking forward to it! Another monster book I just finished reading and want to do a summary of is Guns, Germs and Steel, which is similar, but focused

Thanks, looking forward to it! Another monster book I just finished reading and want to do a summary of is Guns, Germs and Steel, which is similar, but focused on one time-section. I found writing down a mind map of what the author wants to convey really helps distill down the ideas. More than once, I'd read through one section of the book (again) - and be unable to make the connection to the overall theme. This post (and any summary I want to read) aims to solve that - do the hard work once of figuring out the progression, how things connected together, so I can draw upon them for future use.