Is it because documentaries show reality as it is, which is fundamentally illusory, but never points that out? whereas Lynch shows us illusions and then shows us how these illusions are manifestations of something real? — samja
I think of it in terms of the common technique in writing: show don't tell. Like many other artists in their films and novels and poems and so on, Lynch is
showing, and he doesn't tell us much at all. Whereas a documentary
tells us what happened, and we feel appropriate emotions and gain insights only insofar as the narrative approaches the dramatic techniques of fiction, in fiction itself the artist is free to concentrate on what matters, which aims to be universal, to apply to everyone.
But what matters? I think often what matters to us, which therefore strikes us most forcefully as being more truthful, is some kind of direct representation of what people are like and how they feel; of their love, pain, joy, anger, creation and destruction.
Tolstoy was preoccupied with truth, and he said (something like) that the more he strove for historical accuracy in
War and Peace, the further away he got from the truth. The parts of that book that strike one as most truthful are certainly not the parts in which he gives you his high-level, bird's eye account of the war of 1812. Rather, the truth is in his fictional world, in his observations of individual characters and relationships.
Unlike Tolstoy, Lynch is an expressionist, really
only interested in character and relationships and mood--and more fundamentally just in
feelings--so this kind of truth, the truth of how people like you and me feel, and why they do what they do, is what comes across strongest.
But I think Lynch goes further than most. His films feel truthful, to those who are responsive, because they show you pure emotion, and he dispenses with narrative simplicity or clarity. Often the way that truth is told in film and literature is by telling stories, but Lynch is somewhat different: either he places less importance on storytelling--using it as a convenient background against which to show us emotions and sensations--or he makes you work at making sense of the story (probably both).
But I don't think
show don't tell is necessary for maximal artistic truthiness. Proust uses a hell of a lot of words to describe experience in meticulous detail. When I read it in my twenties it blew my mind because I never imagined that any writer could have captured those elements of life that I was familiar with but hadn't thought to explore or to share, and which I had probably come to think of as unique to me. The truth here is in the description more than in the dialogue and the drama (what there is of it).
Which is to say, there are several roads to truth. If you want to see what jealousy or impotence are, i.e., if you want to know the subjective truth of those conditions, then you can watch
Lost Highway,
Mulholland Drive, or
Eraserhead. If you want to know how China got from feudalism to Communism, a documentary or a history book is fine. But if you want to know how the Chinese people
felt about what was happening, and what its
meaning was, go for a
story: an autobiography or a historical novel. But that scheme doesn't scratch the surface.