Jay, it seems to me that we found out everything we need to know about Paul McCartney back in 2003, when he switched the credits on a number of Beatles tunes to say: “McCartney & Lennon.” Imagine you’re a living, fabulously wealthy, much adored half of one of the most famous songwriting duos ever, but that’s not good enough for your self-esteem; you are so small you need — after 40 years — to start putting your name first, ahead of your long-deceased partner?

I shouldn’t have said “Imagine.” “Nowhere Man” (by Lennon & McCartney) is more like it.