I am not a big fan, and certainly not a Beatles historian- But I often ponder the effect of the situation where the group was suddenly a huge rage in popularity, such that their potential market value allowed them to virtually move in to a top studio, at a height in their creativity and just experiment, so much so that even the careful protection of the precious equipment became secondary. And being teamed with a creative mind that had experience with producing and engineering. All this at a level seldom, if ever seen before or since. I know its controversial, but in my mind, what is often seen as genius. (And some bits were IMO) but I also consider that some was also a result of rare and unusual opportunity. Theres probably a large number of people who would have come up with some pretty amazing things given that same opportunity.