This may be as a good a time as any to offer Richard Goldstein’s confession. It isn’t anything he has tried to hide, and, in fact, he mentioned it briefly in his 2015 memoir, “Another Little Piece of My Heart.” But the revelation may be startling to Beatles fans, who have devoted their lives to interpreting every lyric, recording flourish and photograph presented by their band. The stereo Goldstein used for his review was broken. Repeat. The guy who slammed “Sgt. Pepper” in the New York Times had a busted speaker.