Maturity: Be able to stick with a job until it is finished. Be able to bear an injustice without having to get even. Be able to carry money without spending it. Do your duty without being supervised.
If the goal is to get the best artists actors and filmmakers in the world to create the best movies Hollywood does a decent job. And I think no one would disagree with me that it also makes a ton of bad movies and employs a bunch of hacks.
