Everyone knows that Sigmund Freud invented the Oedipus Complex. For those to whom it's new, the Oedipus Complex is about some kind of love, or something broadly along those lines. It is observed mostly when it exists, it has 14 letters totally, and it works both before and after a zebra crossing. It is a user-friendly concept, since it doesn't require much understanding to either write about it or to make movies about it. Indeed, that is Freud's greatest gift to mankind - concepts that would make you look intellectual if you did just anything with them.