There’s a case to be made for the proposition that diffusion is what makes the kind of “intelligence” that we value. If you cook a great dish and you cannot explain how you did it, you get a lot of credit for being a great cook. If, on the other hand, you can point to exactly one recipe that you followed, you will get a lot less credit. So in a sense, the harder it is to trace down the inspirations from which a composition sprung, the higher we value it.