Patroclus is using his medical knowledge, which was supposed to help people, to hurt them, in a perversion of Chiron’s teachings. Chiron always viewed surgery as a necessary violence, but the violence Patroclus inflicts is far from necessary. Meanwhile, though, the fact that Patroclus is able to kill Sarpedon, a half-god, is surprising—in fact it is so surprising it signals that something else may be going on in this moment beyond just Patroclus getting a case of battle fury.