If you like sci-fi and time travel movies, you may have dabbled with the idea of what you would do if it was possible in real life. And if you are in the soldiering business, you may have wondered how you might have changed the course of history — preventing a terrorist attack, stopping this or that war.
I always found stories and movies dealing with time travel fascinating. The idea that armed with the 20/20 vision of hindsight and modern scientific knowledge, you could make a huge impact on world history is both amazing and terrifying at the same time, and the paradoxes created by such actions are really mind-boggling.
Yes, you stopped Hitler and Germany was not turned Nazi thus averting WW2 and the deaths of millions. But what are the second and third order effects? Maybe the USSR becomes the next threat, like in the hit game for us older folks Red Alert, and by stopping WW2 and averting seventy million deaths you create a war that cost humanity two hundred million dead. Not to mention the immediate dangers you create for your own self with that change.
WW2 made people from all over the world to change their daily life for one reason or the other, and the conditions during the war and immediately after affected billions. It is the 50s and your grandpa is stationed in Germany where he is to meet your grandma. If WW2 doesn’t happen, your grandpa will never be in Germany at that time, and just like that you have erased yourself from existence.