The idea of time travel is fascinating and interesting. And certainly, the newer ideas about how the university system constructed, raised the possibility that more dimensions than the 3-dimesions of space and one dimesion of time that we used to hear in the university exist.

The ideas that are often used in fiction where you travel faster than the speed of light in order to change the past. For example at the end of superman 1, superman whizzes around the planet earth, because he is shocked that the Louis Lane's just died. In the great earthquake caused by nuclear explosion when Lex Lothor detonates something.

He breaks the light barrier, travels faster than the speed of light, and then the earth starts go backwards, all of a sudden, Lois Lane rises from the dead.

The fanciful ideas of travelling backwards through time by moving faster than the speed of light. Simply, mathematically don't work.

Michael J.Fox put plutonium in his lorry and he rocked back the time while plutonium does not have the enough energy to drive the time machine. To energize a time machine, to bend time into a presser, to punch a hole in the fabricated space and time would require the energy of the star. One version of a time machine uses what's called a wormhole. Think of a looking glass in Alice Wonderland. That looking glass is the wormhole. What happens if you go back in time, and kill your parents before you're born. Well, if you kill your parents before you are born, how could you be born because you just kill your parents before you're born. If you go back within time, and you saved Abram Lincon from being assasinated, you would have essentially saved somebody else's Abram Lincon, your Aram Lincon died. If you change the fabricated time, you are changing another parallel universe. These people are genetically identical to the people of your past. But they're different.

If I can go back any time in past to see any event, I think I will go back in the past about 3.5 billion years ago, to witness the creation of first molecules of life. I would like to go back to the time that the earth formed, that our sun formed and see how it was, and what exactly was the process that made it possible for our sun to collect together, and force of gravity in all that space dusts and gas coming together to form a star. When people aske: Is time travel just a philosophical structure or hypothetic or mathimatically show. The answer is it's a combination of them all.