Several years ago I attended a museum exhibit featuring the works of Vincent van Gogh. It was not an altogether pleasant experience because there was a man in my group who had a peculiar way of taking in each painting. He would stand about an inch away and then move slowly from one side to another, examining each strand of canvas, each dollop of paint. After he had scanned the entire surface of the painting, he would turn and make his way back across with his right ear about an inch away from the canvas. He examined every single painting in this manner.