Time travelling, the biggest craze that’s waiting for answers for over a century gets a clarification on one of its tweaking hurdles. Imagine you do time-travelling back to the past and prevent the happening of your parent’s meeting or kill your grandfather or do something terrible, that falsifies your present life. Then, you would have never existed to travel back in the first place; so called the baffling knot “grandfather paradox” of time-travelling confession has been untied by a fourth-year undergraduate student Germain Tobar of the University of Queensland.
Solving ‘Grandfather Paradox’
Physicists explain two options to make time travelling, a paradox free one. In the first way, closed time-like curves, a concept of Einstein’s general relativity, can exist in the real world and are also general field equations’ solutions. For instance, you take up a train in a spot, visit tourist places of the land and end up in the same spot (space) and in time. The moment you step off the train is both in the past and future of when you got into the train in the first place. To be clear, objects turn back to the same place and time, that it was in the past, as a loop. Theses closed curves could do time travelling smooth mathematically, if they exist in real world.
And the second way of avoiding paradox involves quantum mechanical model, which encloses opening of another parallel universe, when you were time-travelling and ruined something in the past. Such a ruin could really be harder for you return to your universe, which concludes to a statement, “time-travelers can’t do certain things, like killing Osama Bin Laden or Hitler, no matter what they’d tried”.
Such a travel would be restricted from one’s freedom-of-choice.
What Physicist Germain Tobar says?
Here comes Germain Tobar, under the supervision of Physicist Dr. Fabio Costa, explaining the paradox riddle while preserving freedom-of-choice too.
Germain Tobar eases the riddle as, “say you travelled in time, in an attempt to stop COVID-19’s patient zero from being exposed to virus. If you stopped that individual being infected, it would eliminate the need for you to go behind in time to stop the pandemic from occurring, in the first place”.
In this case, “though you had tried to stop the patient zero from being affected, and in doing so, you or someone else would be affected by the pandemic virus and become patient zero”, he added.
“No matter what you did, the salient events would just recalibrate around you.“This would mean that – no matter your actions – the pandemic would occur, giving your younger self the motivation to go back and stop it”.
Say, you went behind in time & screwed the first meeting of your parents. But however, time will end up in such a way, that they meet, marry and give birth to you, at any means.
“Try as you might to create a paradox, the events will always adjust themselves, to avoid any inconsistency.
“The range of mathematical processes we discovered show that time travel with free will is logically possible in our universe without any paradox.”
— Concludes the physicist.
The paradox riddle was the blockage of time-travelling for over a century and now physicists claim to be as unsolved, theoretically. Theory of general relativity, prescribed by Albert Einstein gets a little clarified by this crack of the physicist, it seems. And years are approaching for mankind to get an experience of its past or future.
What would you do, if you time-travel? Let the comments have your thoughts!