`Before comparing the faces of pre and post 1966 pictures of Paul it would be a good idea to show you just how accurate this process is by comparing two pictures that we already know to be of the same person. First we will compare two photos of John Lennon, taken 11 years apart, and see how much a face changes in this amount of time.
Then we will compare two pictures of Paul’s girlfriend Jane Asher, one taken in the 60’s, the other taken in the 90’s.
Finally, we will compare two pictures that we know to be of the real Paul McCartney, one taken in 1963 and another from 1966 around the time that “Yesterday and Today” was released and see how well they match.’
Or, `Undeniable Proof that People are Crazy and Have Too Much Time On Their Hands’.