Yes, Albert Einstein has come up with Special Relativity, explaining that if an object moves at almost 3.0x10^8m/s, c, or just speed of light, it can distort time by small margins. However, time distortion in large scale (anywhere between a year to hundreds of years) seems very unlikely. Logically speaking, if time machine does exist in the future, then the present and the past should be already filled with people from the future. The distinctive line between "past, present and future" will no longer exist with the time machine. Also, time traveling goes against the laws of conservation.

Not only do I don't think it will not exist, I also believe it should NOT exist. The misuses of time machine can be limitless. For instance, every student would not need to study for a final exam because they can just find out the answers in future. Scientists do not need to discover or research anything because they can just go in the future and find out.

Although time traveling has always been a heated topic in science fictional fields, it should be noted that if invented, it will surely be the most dangerous machine known to men. It will disrupt nature, human history, and human existence. Who knows what can happen if you let yourself change the past or change the future?
JLL
10/26/2013 06:15:31 am

The discussion of time machine brings me back to last summer when I began to watch Heros. It was a show where people have mutations that allow themselves to have these special powers and one of the character in the show had the power of time and space. He could travel through time and space, which was really neat. He reminds me of a time machine. The role of time travel in the show was how he comes back to the past to warn of the possible ending of the world in the future. By doing this, they can prevent from the future from being that possible future.

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