Oakley mentioned that 1 in 300 readers will be the expert on any given topic. You're writing for the other 299. In other words, our duty as writers is to provide the details that substantiate reality and create the semblance of reality but capturing reality itself is not the goal. I hope not. I think not.
Writers are often people who know a little bit about a lot of things.
They are non-experts in usually every area except writing. Non-experts don't fare well in debate with experts. So the magic that is fiction can't help us. And the facts can't either. We must both lie and tell the truth.