Peripeteia considered complex and superior to simple plots without anagnorisis or peripeteia, such as when Medea resolves to kill her children, knowing they are her children, and does so. Aristotle identified "Oedipus Rex" as the principal work demonstrating peripety. (See Aristotle's "Poetics".) In Sophocles' "Oedipus Rex", the peripeteia occurs towards the end of the play when the Messenger brings Oedipus news of his parentage. In the play, Oedipus is fated to murder his father and marry his mother. His parents, Laius and Jocasta, try to forestall the oracle by sending their son away to be killed, but he is actually raised
Oedipus Rex descendants (although many scholars regard Laius' transgressions against Chrysippus to be a late addition to the myth). When his son is born, the king consults an oracle as to his fortune. To his horror, the oracle reveals that Laius "is doomed to perish by the hand of his own son". Laius binds the infant's feet together with a pin, and orders Jocasta to kill him. Unable to kill her own son, Jocasta orders a servant to slay the infant for her. The servant then exposes the infant on a mountaintop, where he is found and rescued by a shepherd (in