Having spent some time today arguing there's not really such a thing as "Progress" in politics or society, I wonder if I was wrong about society. What about #StevenPinker's argument in *The Better Angels of Our Nature* that human violence is declining? That could be a long-term historical trend, and a positive one too.
I guess I should read that book, see whether its evidence seems plausible and what is proposed as the driver of the trend.