 Music in the 50s and 60s, Copland was open and excited about where music was headed. If we thought that music should have flow, a kind of naturalness of flow, the younger people may think it should be just the opposite. It should be discontinuous. It has too much flow, and the flow is too same-like, etc., etc. So that every possible principle that I might name to you, they can give you the very opposite idea as a possibility.