Backing Up A Little To Prove Paul Was Replaced

Alot of people for some reason have a hard time believing that Paul was replaced.  But fans around the world were and still are deceived and I've found two sources (one conclusive) to prove it.

In the bonus material on The Unseen Beatles DVD (BBC video, 2006), there is an interview with Maureen Cleave  whose "more popular than Jesus" interview with John Lennon set off the storm of controversy in America in the summer of 1966.  She was talking about the two things that made The Beatles special:
      "They had the fascination of repetitive siblings.  You think how interesting twins are.  And triplets even more interesting.  And as for quads.  'Cause they all looked quite similar.  And they were completely different.  And so you stared at them waiting for the differences to come out.  I think that was part of their fascination."  (at 1:46-2:01 in the interview.) 
If you looked at the four Beatles at the time, they did not look quite similar and part of the fun of being a Beatles fan was finding which Beatle you liked best.  So I believe Ms. Cleave was talking about the differences in the replacements (for Paul and John.)  Physically, there were differences and the differences in personalities were sometimes even more pronounced.

But the--as they say--gold standard to prove there were replacements of The Beatles is found in the interview with George Harrison by Dick Cavett in 1970 that you can view at:  www.youtube.com/watch?v=Ee8gRroI6fo .  Cavett was telling Harrison that of the other Beatles, he had only met John Lennon:
     George:  "You didn't meet the other eight?"  (1:08-1:09)
     Cavett:   "No.  Were there that many?"        (1:10-1:12)
     George:  "Yeah, there were hundreds."        (1:12-1:14)
     Cavett:   "I only--ahh--I know John . . ."      (1:14-1:16)
     George:  "Yeah, you know, the eighteenth Beatle."  (1:17-1:18)
     Cavett:   "There were rumors that The Beatles weren't always the same person.  In fact, there was one
                     rumor it wasn't even the real four of you who came over here in one trip.  They just sent . . ."
                    (1:18-1:27)
     George:   "We just sent four dummies out there."  (1:27-1:28).

So there you have it, folks.  Whoever was driving The Beatles onward kept a surreal and cynical arm's length distance from the fact that the band was made up of human beings and that the fans deserved to know the truth.  For Paul, the result might have been fatal.