This week we're tackling Steven Pinker's 900 page dissection of the reasons why violence, torture and war have declined over the last 10,000 years. Was it an indeterminate mixture of politics, economics, technology and serendipity?  Or did so...

Full disclosure: sharing this not having listened to it yet; it is queued up.

EDIT: the first few minutes reveal that this is part 1, so stay tuned for part 2!