Of course, it's possible that he came up with the lick on his own, and any influence was subconscious. I mean, I wrote something that sounds just like the Black Crowes' "She Talks To Angels" 4 months before the album came out (open tuning and all). I sure didn't lift that, but there are only so many ways to string 3 chords together. Given Lennon's track record of composition, I'd be hesitant to made unsupported charges of plagiarism. Contrast this to Led Zeppelin; given their record of plagiarism, I'd be hesitant to made unsupported charges of originality.

