Narrative thematic movies are to the independent, experimental (whatever you want to call them, the individual, I think) films as prose is to poetry. Understand that I’m not valuing poetry above prose. There are times where the prose of a culture is far superior to its poets. To its poetics. And vice versa. But it is that different, especially in their respective ways of making. Poets are much more subject to brainstorms or, you know, to inspiration or whatever. So that it would be practically inconceivable for most of them to work with a script at all. Whereas it would be pretty inconceivable to make a narrative dramatic movie without a script. Even Cassavetes had to have some kind of script.