"As good as an eternity. And another thing. In order for Rule 3 potential to have stopped Speedy where it did, there must be an appreciable amount of carbon monoxide in the metal-vapor atmosphere—and there must be an appreciable corrosive action therefore. He’s been out hours now—and how do we know when a knee joint, for instance, won’t be thrown out of kilter and keel him over. It’s not only a question of thinking—we’ve got to think fast !"