I think that various styles and methods and approaches are an invention of people who don't understand the process of acting and who try very hard to label things.
I didn't write this song. Someone was talking in a room. I just wrote down everything they said.
I don't begin a novel or a screenplay until I know the ending. And I don't mean only that I have to know what happens. I mean that I have to hear the actual sentences. I have to know what atmosphere the words convey.