I think the idea of time travel is intriguing. There are three general theories about what would happen if it were possible.
1.) By going back, time would be rewound therefor you would have no memory of going back and time would unravel the same way. This would make travel to the future theoretically impossible.
2.) When you travel backward or forward in time, you could possibly encounter another version of yourself. Some say the consequences of encountering yourself could be disastrous, others say it would do little damage to the time continuum.
3.) The last theory is much like the first. If time is rewound, only the person (or people) within the “time machine” would be aware of what happened and there would be no alternate versions of themselves. They could then theoretically relive their lives.
My favorite theory is number three; what do you think?