Some novels present a story form many points of view. Most movies tell only one person's side of the story. Sometime it's easy to use the strongest point of view, or find the character with the most dramatic experience. It depends on which themes the scriptwriter wants to explore.

Movie characters rarely get to think out loud or talk very much about their emotions. Instead they have to, very briefly, show their feelings through their action or through dialog.

If a movie has more characters than an audience can keep track of, the audience will get confused and lose interest in the story.

Seth Grahame-Smith Quotes