Many of you are lovers of fiction and know its powers innately, but can you explain it? I feel the need to articulate how a story does what it does and why it is important. I don't really know how to tie my thoughts together yet, so I am giving you a loosely assembled list. These are simple ideas that, I believe, are profoundly related to how we live our lives. That is, how we find meaning and identity.
Forgive me if this seems patronizing, I am about to state the obvious.
In "The Courtesy," by John Berger, the narrator's mother says, "I liked books that took me to another life--a life I might have lived." The trick is to relate. A single reader should find a hundred intersections between herself and the story. The story need not--and some might say should not--resemble its reader, but it must reflect the Laws of the Universe.
Now, the good news is the Laws of the Universe can all be boiled down to this one thing: Narrative. Narrative is used here as an adjective, simply having the aim or purpose of telling a story. For something to be described as a Narrative, structure and sequence are essential.
More good news: modern and post-modern authors have shown us that structure and sequence can be interpreted in endless ways. Also, I think it is impossible for humans to think or speak without it. So, that trick again? Think and speak like a human and you will relate to other humans.
But there's more.
In Berger's story, the mother also says, "You put something down and you don't immediately know what it is. It has always been like that... All you need to know is whether you're lying or telling the truth." To me, she is saying that writers should be mythmakers. She could have said, "Imagination is about seeing what Is."
That's what Alice Munro does with the flat-stomached girl who uses the bright-shouldered boy for her own sexual curiosity. That's what Salinger does with the arch of the little girls foot on the sand, Seymour watching her in his robe. That's what Raymond Carver does with the waitress who romanticizes her fat customer.
Fiction (and creative non-fiction, I suppose) inform reality. The act of storytelling is about finding continuity between past, present and future. Stories are our real life Tralfamadorians. There are parts of my past that seem like a betrayal of who I am presently, parts that I didn't choose and now resent. Writing allows me to unite what seems disjointed and to find value in missteps and loss.
Stories put things in order. They're like fill-in-the-blank statements: I am ______ because I was ______ or, simply, _____ because _____. And our lives answer with the next logical step. We choose based on the continuity we've found. This is how our creative consciousness shapes reality.
In every story, explicit or not, there's a metaphor that does the work of literally bringing an idea to life. First, the image and idea (as far as I'm concerned, they occur simultaneously, they're the chicken and the egg), then the understanding, and last, renewed behavior. Metaphor is the vehicle that takes us from first to last.
The poet Adrienne Rich said, "I have cast my lot with those who age after age, perversely, with no extraordinary power, reconstitute the world." She makes me want to write, poetry or fiction or what have you. The storyteller changes the world through relationship (that old trick). An author can have no barriers between herself and the character(s). She has to empathize because she draws on herself to populate her story.

Journalists, it seems, have no place for empathy, no place even for hate. But they can't squirm out of telling a story. Fiction, it seems, is the root of it all.