If that were the case, then we would pick surgeons by randomly grabbing a person off the street, and not use surgeons that have been trained for years in their

If that were the case, then we would pick surgeons by randomly grabbing a person off the street, and not use surgeons that have been trained for years in their profession. But then you might say, "Medicine is a science, and art isn't. All art is relative and no one's opinion is better than another." With that, I don't agree. I think someone who has spent more time studying a topic probably, not always, but probably has more insightful things to say about it. A Shakespeare scholar probably has more insights about Hamlet than a guy who read it in high school twenty years ago. In short, I reject the idea that expertise doesn't exist in evaluating the arts.