Actually, I think it's one of our great strokes of luck that the people who do this are largely insane and irrational, rather than careful, methodical, intellig

Actually, I think it's one of our great strokes of luck that the people who do this are largely insane and irrational, rather than careful, methodical, intelligent planners. For example, the shoe bomber, the underwear bomber, the guys who tried to drive a burning car through the too-narrow entrance of an airport, and so on. Most of these people are irrational, and that's incredibly lucky for us.