Sure he did. Because dippy is easy to believe in. Putting your fledgling solo career on the line, however facile a grasp some think you have, is a bit more of a punt. McCartney was always the real radical: first to drop acid and smoke weed, first to experiment with film and tape, while Saint John got fat in suburbia. Ironically, Macca was more responsible for the later albums while Lennon drove the early poppy era. Musicologists also back up Macca's claim that he wrote In My Life, allegedly one of Lennon's most popular songs, when he was 16. But if we all just get a bong and lie in a hotel bed with the media hanging off our every word the world would indeed be a better place.