I think just as . . . human beings, really, our heads get away from us when we're frightened. [He pauses, then laughs softly, more thought behind the sound than amusement.] It's funny - you'd think it would be hard to club a zom, right? Never been a violent sort, civilized person, all that - and especially the fresh ones, they just look like . . . people. Sick people, but people. The minute you think one might kill you, though, you or someone you're looking out for? Hard to see that that as a person any more.