There's a thing that happens in Hollywood, when you hand in a script with magic in it, and the people at the studio who read it say "We don't quite understand... can you explain the rules? What are the rules here? The magic must have rules" and sometimes when they say that to me I explain that I am sure it does, just as life has rules, but they didn't give me a rule book to life when I was born, and I've been trying to figure it out as I go along, and I am sure it is the same thing for magic; and sometimes I explain that, yes, the magic has rules, and if they read again carefully they can figure out what they are; and sometimes I sigh and put in a line here and a line there that spells things out, says, YES THESE ARE THE RULES YOU DON'T ACTUALLY HAVE TO PAY ATTENTION and then everyone is very happy.
Neil Gaiman
films-based-on-novels, hollywood, magic