As a child, I didn't know what rewinding a tape was. I always assumed that the actors just got back into position and some would even get fed up with having to do the same scene over and over for me. I tried not to rewind it too many times because I was afraid they were going to yell at me that they were tired of having to do it over and over. The funny thing is that recently, here in the US, they have started showing commercials for TVO (I think) where you can rewind live tv and the actors pretend like they are having to do it all over again. One even says, "Do you think we will make it this time?" (the scene is about a car in the air apparently trying to make it to the other side) and the other actor replies, "Do we ever make it?" and the car proceeds to fall. So apparently I wasn't the only one to believe this.
A childhood belief about films

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 the 'dubbing mixer' on TV credits was the person in charge of stirring the make up for the actors.— Clive
- i used to belive that actors in movie used to really get killed. Until i saw an actor die twice— calipzo avery
- I used to think actors in movies sometimes had to actually die to make the movies look real.— Dero
- I used to believe that the actors in movies were all acting live behind those big curtains in the cinema.— Courtney
- As a child I used to think that actors really died in movies.— Jordi Comendador