Paul Simon has a reputation for being aloof, but former Times pop music critic Robert Hilburn, who's written a book about Simon, says it's more a matter of being focused: "That's the thing people don't understand: If Bob Dylan is sitting here, and you sat down with him and started talking, he wouldn't sit there and say, 'Hey, how ya doin'!" He's got his own world. And Paul, if he's thinking about a song, he's not going to talk to you; Neil Young, he's not going to talk to you. Now Bruce [Springsteen], he would try to talk to you. [Laughs] Bono would try to talk to you."