Novelty and Innovation: Someone gets credit for doing art in a way that has never been done before. The early Impressionists invented a new way of looking at the world and explored all of its little corners. A modern Impressionist painter may be able to match their technical skill, but not their novelty; therefore, the modern would be a mere curiosity while the originals were great artists. For a modern person to be a great artist, they would have to explore entirely new media - hence the surprising and transgressive nature of modern art.