Because the writer must be a participant in the scene, while he's writing it — or at least taping it, or even sketching it. Or all three. Probably the closest analogy to the ideal would be a film director/producer who writes his own scripts, does his own camera work and somehow manages to film himself in action, as the protagonist or at least a main character.
Hunter S. ThompsonHouston is a cruel, crazy town on a filthy river in East Texas with no zoning laws and a culture of sex, money and violence. It's a shabby, sprawling metropolis ruled by brazen women, crooked cops and super-rich pansexual cowboys who live by the code of the West -- which can mean just about anything you need it to mean, in a pinch.
Hunter S. ThompsonHe knew who I was, at that time, because I had a reputation as a writer. I knew he was part of the Bush dynasty. But he was nothing, he offered nothing, and he promised nothing. He had no humor. He was insignificant in every way and consequently I didn't pay much attention to him. But when he passed out in my bathtub, then I noticed him. I'd been in another room, talking to the bright people. I had to have him taken away.
Hunter S. Thompson