Instinct is the key to McCartney — he will chase down his first idea, which is so often brilliant but occasionally quite bad. Sometimes you get Yesterday or Let Me Roll It, sometimes you get Spies Like Us. He can’t help himself either way.
I happen to like almost all of Venus and Mars. Not as strong as Band on the Run, but a lot better than Speed of Sound. Two deservedly huge singles on that, but it took the faux democracy of Wings too far in having each member sing a song.