What is determinism yahoo

Time travel is deterministic and locally free, a new paper says —resolving an age-old paradox. This follows recent research observing that the present is not changed by a time-traveling qubit. In a new peer-reviewed paper, a senior honors undergraduate says he has mathematically proven the physical feasibility of a specific kind of time travel.

The paper appears in Classical and Quantum Gravity. So do we. Let's nerd out over it together. The math itself is complex, but it boils down to something fairly simple. Time travel discussion focuses on closed time-like curves CTCs , something Albert Einstein first posited.

However if you stopped that individual from becoming infected, that would eliminate the motivation for you to go back and stop the pandemic in the first place. This is a paradox, an inconsistency that often leads people to think that time travel cannot occur in our universe.

It would mean you can time travel, but you cannot do anything that would cause a paradox to occur. Be careful what you wish for, and be careful what you time travel for. Tobar explains in the statement:. 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. While that sounds frustrating for the person trying to prevent a pandemic or kill Hitler, for mathematicians, it helps to smooth a fundamental speed bump in the way we think about time.

It also fits with recent quantum findings from Los Alamos , for example, and the way random walk mathematics behave in one and two dimensions.

At the very least, this research suggests that anyone eventually designing a way to meaningfully travel in time could do so and experiment without an underlying fear of ruining the world—at least not right away.

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