This episode is a review of a fascinating book, The Better Angels Of Our Nature, by Steven Pinker. The following quote summarises the book's main argument:
"Believe it or not—and I know that most people do not—violence has declined over long stretches of time, and today we may be living in the most peaceable era in our species’ existence. The decline, to be sure, has not been smooth; it has not brought violence down to zero; and it is not guaranteed to continue. But it is an unmistakable development, visible on scales from millennia to years, from the waging of wars to the spanking of children."
- The Better Angels of Our Nature: Why Violence Has Declined by Steven Piner
Listen To Episode 227