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A physicist says new mathematics prove that paradoxical time travel is possible



Time travel has been the most important science fiction book and film for many years. Most who have read or seen content that focuses on time travel know the paradox. Perhaps the best example is the 80s classic, Back to the Future, in which Marty accidentally prevents his parents from meeting and has to fix his mistake before he is ripped off his life.

Time travel is something that scientists and physicists have pondered for many years. A physics student named Germain Tobar of the University of Queensland in Australia says he figured out the math that would make time travel without paradoxes possible. According to Tobar, classical dynamics says that if you know the state of the system at any given point in time, it can tell you the entire history of the system.

His calculations suggest that spacetime may be able to adjust to avoid paradoxes. An example is a time traveler who travels back in time to keep a disease from spreading. If the mission had been successful there would have been no sickness for the time traveler to go back and try to prevent this from happening. Tobar suggests that the disease would otherwise or otherwise spread to clear the paradox.

He says whatever the time traveler did the disease would not stop. Tobar̵

7;s work is very complicated, but essentially deals with deterministic processes for any number of regions in the space-time continuum. It shows how closed time curves, as Einstein predicted, can fit the rules of free will and classical physics.

Tobar’s head of research is physicist Fabio Costa from the University of Queensland. Costa says the math is “checking out” and goes on to say that the results are science fiction stuff. The new math suggests that time travelers can do what they want and paradoxes are impossible. Costa says events will always adjust to avoid inconsistencies.


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