Paradox Free Time Travel – Possible
Back to the Future IRL
Cristal M Clark
Ever wanted to go back in time and change something? How about forward in the hopes of living out the rest of your days in some futuristic world? Well, as luck might have it you might be able to do just that.
Germain Tobar, a University of Queensland student and his physics professor Fabio Costa say that they have found a middle ground in mathematics that solves a major logical paradox in one model of time travel.
“Reversible dynamics with closed time-like curves and freedom of choice.”
Time travel discussion focuses on closed time-like curves (CTCs), something Albert Einstein first posited. And Germain Tobar and Fabio Costa say that as long as just two pieces of an entire scenario within a CTC are still in “causal order” when you leave, the rest is subject to local free will.
“Our results show that CTCs are not only compatible with determinism and with the local ‘free choice’ of operations, but also with a rich and diverse range of scenarios and dynamical processes,” their paper concludes.
Of course it includes a lot of rather complex math, but here’s the thing a paradox is an inconsistency that often leads people to think that time travel cannot occur in our universe. For instance, you want to travel back in time to prevent something bad from happening. Changing it in the past negates the need to travel back in time. That is a paradox. You are basically changing something that will change a future, the one that you just came from.
The real truth, in terms of the mathematical outcomes, is be careful what you wish for, and be careful what you time travel for. Germain and Favio used the example of traveling back in time to prevent patient zero from ever getting the Coronavirus thus preventing the pandemic. Germain breaks it down in the following statement:
“In the coronavirus patient zero example, you might try and stop patient zero from becoming infected, but in doing so you would catch the virus and become patient zero, or someone else would. No matter what you did, the salient events would just recalibrate around you. Try as you might to create a paradox, the events will always adjust themselves, to avoid any inconsistency.”
It sounds very frustrating but the reality here is that it simply means the universe has a design whether we like it not and the outcome may not always be what we want it to be, it will still find a way because that is the design of the universe hence things beyond our control were always meant to happen.
Cristal M Clark