I should think we’d all know the story of Oedipus from Greek myth. But here’s a brief summary:
Laius & Jocasta, king & queen of Thebes, consult the Oracle at Delphi about their chances of ever having a child. The Oracle reports that, if Laius has a son, the son will kill his father and marry his mother. Understandably they’re disturbed by this, and when Jocasta eventually does have a child, Laius orders a servant to abandon him in the wilderness. But the servant, lacking infanticide in his heart, passes him on to a Corinthian shepherd, and eventually is adopted by the king and queen of Corinth and named Oedipus. As an adult, Oedipus consults the oracle his ownself and is told that he is destined to murder his mother and marry his father. Not wishing to do this, and not realizing he is adopted, he leaves his home. One day he encounters his biological father and five servants at a crossroads. Naturally, neither recognizes the other. An argument ensues, and Oedipus kills not only Laius but all the servants but one. Some time after this he journeys to Thebes and delivers the city from the monstrous Sphinx; he is then crowned king and marries Jocasta. Many years later, after he and Jocasta have children of their own, Thebes is beset by a plague; in the course of investigating it, Oedipus discovers his true identity.
Okay, that’s the basics everybody remembers from 9th grade. What some may not know is that there are those who say that this tragedy was ordained by the gods as part of a long-standing curse against the line of Cadmus, founder of Thebes.
Let’s say that that is the case, and that the gods always intended for Oedipus to end up as the eponynom of motherfucking. But they’re not micromanagers; that is, they dont’ care how their victims reach their particular fate, as long as they do. Let’s further say that Laius, aware of curse, decides early in his life that there is no possible good result from him ever going to any oracle, and so does not; thus he and Jocasta are not aware of the specifics of the doom appointed them. Consequently, when Jocasta gives birth to their son, they keep the baby and intend to raise him as their own.
How, then, would the story play out?
See? I CAN start change-the-story threads about things other than Tolkien.