I should have been more clear. The Beatles themselves really didn't change the world, it was the world's reaction to them and their music that did.The world would have been changed without music. The Industrial Revolution happened without it. So did the discovery of electricity, and the end of World War II, unless you actually think that the Andrews Sisters hastened the death of Hitler and the bombing of Hiroshima and Nagasaki.
I remember in my college days a professor bringing in no less a '60s figure than Timothy Leary in for a reporting exercise for us aspiring journos. He was to give a lecture on campus that night promoting his space migration scheme, but agreed to a wide-ranging press conference-style exercise with students that morning. Well, wouldn't you know that one of the first questions wasn't about his nutty scheme, or even about LSD, but about the Beatles and his thoughts on their message and impact a half-dozen or so years after their breakup. His reply made it into just about all of our stories, I'd imagine. He called the Beatles "troubadours." I sensed a lot of outrage in the room, including a bit of my own, but the passing years have convinced me that Dr. Leary was right. The Beatles were geniuses, but what they gave the world, reduced to its essence, was musical entertainment.
As for Timothy Leary, he was probably one of the most hypocritical famous people ever...("Turn-on, Tune-in, Drop-out" (because most of you, like me, are very wealthy and have a wonderful home in Beverly Hills to hide out in). BTW - Don't trust anyone over 30! (I realize that I'm already well into my 40s but who can tell? )...Right!