Tyson thinks the foremost dramatic impact on our current understanding of your time came from Einstein's discovery of theory of relativity. Time stopped being a linear, essentially sequent plan wherever “we square measure all collaborating within the same ticks of the clock,” as Michael Gerald Tyson says. With Einstein's theory of relativity, time became a additional fluid conception, addicted to the observer.
Tyson rather thinks of your time as a dimension, job USA “prisoners of the present”. What he means that is that we tend to don’t have a capability to leap into the past or the long run on our individual timelines. however what if we tend to may just do that?
If time travel was possible, we’d open ourselves up to some doubtless mind-blowing things and logic puzzles.
Some classic time paradoxes take off of this thinking. They revolve round the changes that may be unreal by suddenly having the ability to travel back and forth in time.
If you jumped into the long run, would you then understand and bear in mind everything that might have happened to you had you stayed in your original timeline and let events occur naturally?
And if your timeline already exists, may you alter your fate by dynamic aspects of your future, if you managed to visit it, like within the classic sci-fi picture show franchise “Terminator”.
In AN example of another strange riddle, Michael Gerald Tyson conjointly explores the thought of a particle that's ne'er created nor destroyed and solely exists in an exceedingly time loop, a thought known as “the Bootstrap Paradox”. within the time-travel picture show “Somewhere in Time”, this “self-created” object was a case that the lead character received within the future and was able to take back to the past. Once he did that, the origin of the item became unsure and it got cornered within the time loop.
Another doubtless massive player in time travel - the ill-famed upshot. it is a conception from chaos theory that essentially says that tiny initial causes will produce massive ripple effects. If you were time traveling, may you too simply amendment the course of history?
Tyson isn’t thus certain that if you, let’s say, return and kill baby German Nazi that you’d very amendment something.
In the end, Michael Gerald Tyson doesn’t believe that travel back in time is feasible, agreeing on it with Hawking. He thinks that at some purpose, physicists can discover a brand new law which will justify what prevents backwards time travel, adding “we do not know what that law is or why it should exist however everything we will imagine that enables it entirely messes everything up.”
While this is often still simply a hypothetic discussion, Michael Gerald Tyson sees definite worth in speculating concerning time travel. On the opposite hand, he takes comfort in living a “fixed” life in an exceedingly linear timeline, adding his opinion of free will:
