I used to believe that if a movie shows a character from, say, age of 7 as a child and then later shows him as an adult of, say, age 27 .... the movie-makers had to film him when he was 7, then wait another 20 years for him to grow up and continue filming the rest of the story. And so on.
A childhood belief about general

others believed things like this
- I used to beleive that in order to rewind a film the actors would have to re-act the whole movie backwards. — movies backward
- I thought there was only one copy of a movie and you had to wait til it got to your town,— quagmire
- I thought Hurricane Dennis (in 2005) and the character Dennis from the Spongebob movie were related somehow.Anon
- I used to think that when a movie was 'based on a true story' it was happening for real then and there— Tom
- when i was little i believed that when we watched a movie people had to act the movie all over a gen.
— Emmer - I used to think that a movie is made in realtime. I tought that a 2 hour movie is made in 2 hours.— Alexander