Exactly. I think I know now what artists I like: the ones that get tired of themselves. Akerfeldt is that way, Wilson, even Genesis, and certainly Queen. They did a certain thing for a while, and when they got back in the studio they said "man, let's not play the same shit for yet another two years. I want to do some fresh, something fun." Opeth wrote a 70s prog album, Wilson a pop album, and if course Genesis and Queen need no mention.