Paradox-Free Time Travel
Researchers from the University of Queensland discovered that if time travel were possible, the paradox couldn’t actually exist. In other words, any changes a time traveler would make in the past would cause the timeline to self-correct, thus ensuring that whatever occurred to send you back in time would still happen. The current timeline’s events would still happen, but probably not in the same way, though similar enough for one not to notice. Read more for two videos on time travel and additional information.



The paper, titled “Reversible dynamics with closed time-like curves and freedom of choice,” was published last week by the researchers in the peer-reviewed journal Classical and Quantum Gravity. This one resembles the study that appeared in the peer-reviewed journal Physical Review Letters, where it also discusses that changes made in the past won’t dramatically alter the future.

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Say you traveled in time, in an attempt to stop COVID-19’s patient zero from being exposed to the virus. 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,” said University of Queensland scientist Fabio Costa.