The Pixar rules for storytelling are a set of guidelines created by the creators at Pixar Animation Studios in an effort to ensure that their films remain entertaining and meaningful. The rules state that stories must be:
Clear, simple and understandable. Surprise the viewer with new information gradually over time, never all at once. Allow for a range of emotions to be felt by audiences, including fear, sadness and even laughter. Use a protagonist who begins by being unsure of themselves but has the ability to overcome their fears in order to achieve something that they are striving for.