“The knife. Slashing,” he said, slashing the air with the steel blade, “is better than stabbing. Harder to block. Go for the throat, and if that’s not working, go for the eyes or the belly. Thigh’s good, too, big veins in the thighs.” All this instruction was accompanied by vigorous demonstration. “And never stop,” he said, dancing closer, the steel flashing, “never let up; keep the knife moving, keep him on the defensive.”