A rule first postulated by known film director George
Lucas, stating that, "In any given movie franchise, at least one third of the films
will suck." In addition to his own Star Wars prequels, some examples of movie sagas that follow this rule are: the Matrix saga, The Godfather trilogy, The Planet of the Apes, Shrek.
An exception to the rule is Toy Story, while the ultimate application of the rule is the Twilight Saga, wherein all the movies
suck, the novels sucked, and yet there's another movie in the making.
Son: Dad, do you want to watch the Phantom
Menace?
John: There were no prequels, and I have no son.
Paul: Should we watch Godfather Part II?
Sam: Does George
Lucas's first rule of cinematography apply to it?
Paul: On the contrary, it's
the best in the series!