The way in which mathematicians and physicists and historians talk is quite different, and what a physicist means by physical intuition and what a mathematician means by beauty or elegance are things worth thinking about.
I dare suggest that the composer would do himself and his music an immediate and eventual service by total, resolute and voluntary withdrawal from this public world to one of private performance and electronic media.
I like the idea of the documentary as a portrait. There's not a chronological beginning, middle, and end structure. You build something in the editing room that's shaped by getting to know the person and digging deeper, unpeeling the layers of them as you get to know them.