Time Travel is a concept developed by science fiction but has become somewhat of a craze in the scientific world. Scientists are debating wether or not it is possible. Some say you can only go forward in time while others say you can go forward or backward. In class we watched the Star Trek episode A City on the Edge of Forever, in this episode Kirk and Spock go back in time to rescue Mccoy. While they are there they realize that whatever Mccoy did drastically altered the future. A woman must die in order for the future to be set right again. And if she doesnt then the whole future changes. However a homeless man dies who did not die before and yet nothing changed. Which can only mean that some people drastically alter history with their presence while others merely exist.
We also read a Nova interview with Carl Sagan on his views of time travel. He reminded me of Stephen Hawking a lot. He used the same theories such as moving as close to the speed of light to travel forward in time. And how it is probably impossible to go backward in time. He said he has mixed feelings about backwards time travel. He would like to go back but he doesnt want to not exist. He also talks about the granfather paradox which is kind of crazy if you think about it.
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