This documentary was put together by the history channel, a channel known for creating great works of art. This video starts off discussing what time travel really is, what it has become, and what could eventually happen. It has become a consensus that time travel is not impossible but not necessarily probable. The law of physics states "all things in the universe move in an orderly state to a disorderly state." I will be honest most of the information has gone right over my head due to the fact that I have no knowledge in the space time continuum. Although one thing I did pick up was you can not travel back in time unless you enter a parallel universe. So that is going to big for us to explain to everyone, a demonstration might be need or to play that segment of the video.
https://www.youtube.com/watch?v=C3-aiIlJfxU
https://www.youtube.com/watch?v=C3-aiIlJfxU