I thought my screenplay went through the wringer in the development process, but THIS LINK follows the process for the movies Alien, Spider-Man, and others—successful movies that started out badly, then came out okay. It’s a feel-good story about something wrenching, kind of like Pretty Woman.
In the original Back to the Future, Marty and the Professor run a bootleg video operation (Marty and the the Prof probably ran it until someone realized that if the movie ever got made, it would itself be bootlegged. In Star Wars, Han Solo is a Jedi knight.
Movies are the grouping of many unlikely things. Sometimes doing that doesn’t work. In fact, usually, it’s a mess, like these McCall’s recipe cards from the 1970s.