The Magic School Bus

At the end of the show's debut episode where the titular bus took the class on a tour of the solar system, a producer explains to a viewer how they changed certain things around to better tell the story, such as shortening the travel time between planets to fit the runtime. He also admits to a lot of guesswork about Pluto, which we knew very little about back in 1994 when the episode first aired.

Example of:
Acceptable Breaks from Reality