“The maths checks out – and the results are the stuff of science fiction,” the study's co-author, University of Queensland professor Fabio Costa, said in an interview with the university.
“Say you traveled in time, in an attempt to stop COVID-19’s patient zero from being exposed to the virus," Costa continued. “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. Some physicists say it is possible, but logically it’s hard to accept because that would affect our freedom to make any arbitrary action. It would mean you can time travel, but you cannot do anything that would cause a paradox to occur.”
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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," Costa continued. “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. Some physicists say it is possible, but logically it’s hard to accept because that would affect our freedom to make any arbitrary action. It would mean you can time travel, but you cannot do anything that would cause a paradox to occur.”
Time travel 'theoretically possible,' study says: 'The math checks out'
Marty McFly and Doc Brown may have traveled back in time and slightly altered their futures in the "Back to the Future" series, but a newly published study suggests paradox-free time travel is "theoretically possible."
