Greatest Superman Moment Ever

Youtube user mcamoran comments:
All the things they do make sense if we understand that they act on a 2D cinema wide-screen and 3D world. All the people inside the movie are 2D characters, they cannot understand the existence of another dimension, Remember when superman spinned the earth backwards to make the time go back in order to change the bad events? He just rolled the film backwards and the 2D characters (also the real viewers of the film US) thought he did this for real.

So we have a movie pattern where some characters act inside a 2D and 3D reality. A gun of a 2D world cannot harm superman (or the rebels) because they know that they can move inside the 3rd dimension .