If you could travel back in time, and change one historically significant event, what would you change? Please, something other than stop Dave from leaving Van Halen in 1985... most of us would do that, I'm sure. I'm talking about something really important that affects our lives to this day. I believe I would go back and prevent the Kennedy assassination from taking place. Our involvement in the Vietnam war may have never happened had JFK not been shot on that fateful day on Nov. 22, 1963, and thousands of American lives may have been spared. There's alot of other things that would be different that I can't think of right now, but that's the one thing I can think of that would.