There are some FAQs on his book here (for example, how he complied war violence stats): http://stevenpinker.com/pages/frequently-asked-questions-about-better-an

There are some FAQs on his book here (for example, how he complied war violence stats): http://stevenpinker.com/pages/frequently-asked-questions-about-better-angels-our-nature-why-violence-has-declined http://stevenpinker.com/pages/frequently-asked-questions-abo...