I never go to San Francisco without thinking about that extraordinary documentary but it is really hard to categorize. You do a documentary about cancer, and two years later you meet someone who tells you how it affected his or her life, that memory makes an impression. They are all making some comment about humanity. I don't know what in history is comparable to the documentary form in terms of investigating human behavior . . . Maybe that's what troubadours use to do.
People still write poetry and music, and they still paint and sculpt.
However, making a film about some form of human behavior in its actuality is a more contemporary art form. After all we're all lost in this planet together, so we need to learn how to observe each other's behavior. I wake up every morning thinking the world is about to come to an end. I don't know . . . I think the form is constantly changing.