"Since I was there in the very beginning, I know the history of the characters. So, I make comments about the tone and sometimes remind the writers that we've done that before"

Matt Groening is describing his participation in the production of a fictional universe, such as a tv program or movie. He is stating that considering that he existed in the very start, he understands the history of the characters and the tone of the story. He is also saying that he makes comments about the tone and reminds the authors if they are repeating something that has actually currently been done. This reveals that he is extremely bought the project and wants to make certain that the story is consistent and real to the initial vision. He is likewise showing that he is a valuable asset to the group, as he has a deep understanding of the characters and the story. His remarks and reminders assist to guarantee that the story is informed in the most efficient method possible.