"Pinker knows this because he’s already been through the process with his previous book, The Better Angels of Our Nature, which persuasively argued – again with

"Pinker knows this because he’s already been through the process with his previous book, The Better Angels of Our Nature, which persuasively argued – again with graphs and a mountain of research " Admittedly I did not read TBEoON, but attended one of Pinker's talks on it. My main problem with it was exactly with the graphs that he presented. He argued that reaching back into ancient history he could show a trend of improvement. There were no error bars at all on this graph, leading me to be suspicious that the contested early data (are ancient human remains showing the traces of butchery the result of murder and cannabilism or of ritual, religious cannabilism?) are misused to create a "trend".