It goes to show that, the rules instills discipline in a workforce.
Explanation:
In the time past, before the introduction of the Berlin factory rules, most workers were working in the factrory at their own pace leading to low productivity and loss of productive hours.
However, with the introduction of the rules and fines to checkmate those flouting any of them, there was a drastic improvement in the commitment of people to work. Some of this factory rules are still applicable at this moment as a result of its' effectiveness.
Dally sneaks into the movies simply because he does like to follow the rules, even though the ticket was cheap. What this tells us about Dally is that he never likes to do things in a legal way.
the reason they do this is because when you are reading the story you dont want a 500 or 600 page book with 3/4 being about how he grew up the author thought it irrelivant
He helps her with her fear of monsters by going along with it. He calls it the Imaginary Demon. By making her fear seem like a "real" thing, it adds humor to it and makes it less frightening.