"Stories are efficient summaries of reality, but that isn't all they are. Stories have an arc, they put constraints on the future - when you've heard the first half there are some things which are more likely in the second, and some less. I'm sure our minds use stories because they describe the way the world is AND because they say something about how the world could or will be."
I recently had the pleasure of interviewing Tom Stafford, psychologist at the University of Sheffield and author of The Narrative Escape. See the rest of our conversation about our brains' narrative habit at the 40k blog.