"Who controls the past, controls the future" - George Orwell

To me, this quote has a bigger meaning than you realize. My interpretation of this quote what ever happens in the past can change the future in many, many ways. A good example of this is the short story "A Sound Of Thunder" by Ray Bradbury. In this short story, technology has gotten to the point where time travel is possible. The company, "Time Travel Inc.", uses this machine to travel back in time to hunt rare animals. One could go back in time and hunt buffalo when it was plentiful in the old west. Well, the main character, Eckles, wanted to hunt dinosaurs. to be more specific, he wanted to hunt and kill a Tyrannosaurus Rex. But something goes wrong. Eckles didn't realize what he was up against and chickened out at the last minute. He then wonders through the prehistoric jungle and steps on a butterfly. When they return to the future, they discover that time has forever changed. America is now run by a dictatorship instead of democracy. Even the way we spell things changed. All because a guy stepped on a mere butterfly in the past. That is a good example of a butterfly effect, don't you think? If you step on a butterfly, you change the future for the worst.