Just watching a video by Britt Hartley which summarizes John Grey's thesis: humanity has not made any moral or psychological process in the last 10,000 years, only technological progress.
The reality is that the myth of progress is a hangover from Christianity; before monotheism, the prevalent belief was that history goes through cycles endlessly and there is no attainable end point.
She also reviews Pinker's book, the Betters of Angels of Our Nature, but she admits she just skips over the data; so I´d skip over that part and jump right to the If Books Could Kill episodes on that book. Their conclusion: Pinker's irresponsible and his book is popular with the Davos set for obvious reasons.

