Imagine one day you learn how to travel back in time. Suppose that with a glorious goal, you decide to go back, kill Hitler and save millions – because that’s simply the first things that comes to mind. You succeed, Hitler is dead, and then what? You just killed a person. I know – Hitler, but still, you’re a killer. How will you live with that? Will you go back to undo what you have done?
What I’m trying to say (and hoping this story will do it for me): when time travelling, should we be worried about the changes we might cause in history? Shouldn’t we be more afraid of what we cause to ourselves?
Simultaneously, do you really believe that you would go back saving anyone else, but yourself?