Marty Seigel
3/20/13
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Have you ever wanted to go back in time, and change the course of history, maybe for yourself or even the history written in your history books? Ever since I saw the movie Back to the Future when I was a little, I was fascinated by the concept of time travel. Time travel is the concept of moving between different points in time, in a behavior corresponding to moving between different points in space. Time travel could deal with moving forward in a timeline or backward in a timeline. Jane Marshall, a leading physicist today said “Einstein's theory of relativity is a theory of space and time, and should be no surprise that black holes offer, in concept, a way to travel through space and time” (All Sands). Even some of the earliest literature works of time travel dates back to 700 BC with the story of Raviata in the Sanskrit writings of Mahabriata (Maha bree yata). All in all scientists have been trying to uncover the myths and facts about time travel throughout the years. Stephen Hawking, one of the most well known scientists of our day has said “All you need is a wormhole, or a rocket that goes really, really fast (speed of light)” (Hawking). Today, I will be trying to give you a better understanding the two major theories relative to time travel with the immutable timeline theory and the alternate timeline theory. Before I go into these two major theories, we must get a grasp of some key concepts or terms used by scientists and the physical world. The first would be time. Time is a hard element to grasp. It is more of a theoretical word we use to describe the measurement of change. We think of it as a constant rate, but rather this measurement especially in time travel is evaluated to show events ordered from the past to the present, the present to the future. Another key term I would like to discuss would be a paradox. A paradox is something that