JUST STAND VERY STILL AND MAYBE THEY WON'T HURT US: It's true -- standing up to a bully puts you in immediate danger of getting socked in the mouth. But it's also the only way to get the bully to back off eventually. Giving him flowers or ignoring him while he socks you in the mouth -- not an effective strategy. (In other words, what a stupid study.)

Come to think of it, that "bury your head in your hands and don't move" thing is what they suggest when confronted by an angry bear. But bears are much bigger than us, and so it's our only hope. Not the case with terrorists, or at least that's what I hope. I see the terrorism problem as more like ants. It may take a long time to get rid of 'em, and you may always see an ant or two sneaking in along the floorboards, but you can't just decide to coexist with 'em in your house.