As if Paul McCartney's word wasn't good enough regarding the writing of the Beatles' "In My Life" -- U.S. and Canadian researchers have just gone public with their findings, stating that McCartney could not have written the melody to the 1965 Rubber Soul classic. According to The Telegraph, Mark Glickman -- a senior lecturer in statistics at Harvard University, and Jason Brown -- a Professor of Mathematics at Dalhousie University, McCartney "misremembers" composing the song's top melody because the song bears all the musical hallmarks of John Lennon." It should be noted that after the Beatles' breakup, both Lennon and McCartney gave separate interviews detailing who wrote what within the duo's partnership. They two agreed on everything except two songs -- Lennon claimed that he wrote the majority of the lyrics to McCartney's "Eleanor Rigby" and McCartney claimed that he wrote the melody to Lennon's "In My Life."

Proffessors Glickman and Brown "created a computer model which broke down Lennon and McCartney songs into 149 different components to determine the musical fingerprints of each songwriter and have concluded that Sir Paul probably 'misremembers,' because the song bears all the musical hallmarks of Lennon.

Mark Glickman explained, "We wondered whether you could use data analysis techniques to try to figure out what was going on in the song to distinguish whether it was by one or the other. The basic idea is to convert a song into a set of different data structures that are amenable for establishing a signature of a song using a quantitative approach. Think of decomposing a color into its constituent components of red, green and blue with different weights attached. The probability that 'In My Life' was written by McCartney is .018. Which basically means it's pretty convincingly a Lennon song. McCartney misremembers."

Paul McCartney says that above all the other emotions he has regarding having John Lennon as his best friend for a substantial part of his life, he's still in awe of their musical connection: "I've got so many great memories, and I feel very privileged. Y'know, I'm the guy he wrote with -- that's pretty cool. And we wrote some great stuff and enjoyed it -- never really sweated it. We normally finished a song in about three hours, and can't ever remember coming away from a session without having a song."

AUDIO: PAUL MCCARTNEY ON SONGWRITING WITH JOHN LENNON