Lennon or McCartney? The science behind who wrote which Beatles songs

The use of statistical analysis could finally reveal the answer to an age old question: Lennon or McCartney?With the majority of the Beatles back catalogue it's quite easy to say whether it was written by John Lennon or Paul McCartney.For example, the music for In My Life from the album Rubber Soul, which ranked as the 23rd greatest song of all time on a list by Rolling Stone, remains unknown.