The lesson that I take from it is that there's always more than one way to make great art. Some directors hold the camera, some don't. Some directors edit, some

The lesson that I take from it is that there's always more than one way to make great art. Some directors hold the camera, some don't. Some directors edit, some don't. Some directors write their own screenplays, some don't. It's really easy to look at a limited sample size (say, your own career) and assume that the things that you've seen are pervasive. "Best Practices" are only best in a particular context.