De rerum natura. Here’s Boyd’s definition of "insight" again: Ability to peer into and discern the inner nature or workings of things. 
 My first reaction when I read this was "Yawn." I mean, who wouldn’t want the talent to "peer into and discern the inner nature or workings of things"? And in fact, up until it suddenly appeared in slide 144, Boyd hadn’t attached much importance to it. Just to give one indication, he began Pattern...