"My guess is that they didn't work like they did in this movie prior to Yoko coming on the scene.
They were really under the gun to come up with stuff with all the cameras on them, just taking basic ideas and writing it on the fly."
Steve, the task was virtually impossible based on the timeline and this was not the only time the Beatles had virtually no time to write and learn to play an album full of hit music which would last for generations.
If anyone has the time and for you conspiracy buffs out there (like me), there is a 600 + page long, great book with tons of details about the Beatles, their songs and much more titled, The Memoirs of Billy Shears.
It is approached like an autobiography but written by Thomas E. Uharriet.
And think about this before you poo poo the book - how could any book get written which includes Beatles lyrics and stories without copy right violations or lawsuits preventing it from being published?