You can kill/injure in a fraction of a secone with a sharpened #2 pencil, screwdriver, sand filled and dampened sock, wire coat hanger, 2x4 club, 2 sharp blows to the nose, piano wire, coaxel cable, etc etc etc.
Stupidity reigns supreme at the schools. Remember at least HALF the population will learn ALL their socialization skills, etc. in the 12 grades of public school before they are turned loose on scociety.......