Paul Chappell's "Peaceful Revolution"

Earlier this summer, I got the chance to read Paul K. Chappell's Peaceful Revolution. It's well worth the read, even if much of his research is familiar to those who have read Lt. Colonel Dave Grossman's study On Killing (which he quotes here) and know many of the arguments about what war does to the human brain. "If human beings were naturally violent, why would every army in history have to expend so much effort in order to train people how to kill?" We need more Paul Chappells in the world.