Is fate predestined?

Man's life is predestined and has certain scientific basis. This topic will be discussed for a long time. Let me roughly prove that the current time travel has long been proved to be feasible in theory (Stephen Hawking), but it can actually go back to the past and the future. Isn't what you can see in the future what will happen now? Isn't this fate?

From a philosophical point of view, it can also be proved that fate is decided by heaven. Death is certain, this is everyone's life. Isn't this destiny takes a hand? Of course, how and when to die, as far as the current technology is concerned, no one can say for sure, which is often called luck. Feng Shui says: Destiny is determined by heaven, and luck is in your own hands.