Time is the past and the future which hinges on the present. There are all kinds of theories out there about bending space and time but that's all they are, theories. Time is one with the universe. If you change the past in this room, you change the past in this area, this world, this solar system, this galaxy, this occurrence, and the universe. You can't change the past, but it can certainly be viewed with the power of the spirit world, everything is in the present. Neither can anyone visit the future. The future is simply variables of probabilities that hinge on randomness and free will within the present. The future out there in the galaxies where free will is not involved depends solely on randomness. The future is not "written in the stars". It is yet to come whether it depends on randomness or free will. A person can certainly predict the future for a specific personal act. Such as the act of swallowing water. Only one free will is involved here and that is his. As soon as more people are involved in a decision making, the future becomes vague. Now, when you combine this with randomness, it becomes almost an impossibility. However, with future quantum computations predicting the probabilities of occurrences, the future may be manageable but it can never be as dead set as the past. The Universe is perfect as God created it and the future certainly depends on randomness and the conglomeration of humanity's freedom of choice.