The Grandfather’s Paradox
The desire to correct past mistakes is probably one of the top reasons why we always find time travel stories so interesting. In those sci-fi movies, it can be said that nothing is eternal if we have a time machine and can completely go back to fix something. But in real life, is time travel possible or is the concept merely a fantasy?
If we ever learn about the concept of time travel, we will more or less encounter a paradox that until now has not been answered – the grandfather paradox. The content of this paradox is: There was a man who traveled in time to the past and killed his grandfather before he married his grandmother. As a result, his father will not be born, which leads to the man never being born. And if he was never born, how could he travel to the past? But if he didn’t go back to the past to kill his grandfather, then his grandfather must be alive and that means he was still born and could pass time to kill his grandfather.
The two situations above deny the existence of each other, and this is a kind of time travel paradox. This paradox was first mentioned by the sci-fi scientist René Barjavel in the book Le Voyageur Imprudent (rough translation: The careless traveler) published in 1943. Although the name of this theory is the grandfather paradox, it rather emphasizes that any act of transcending time leads to a return to the past. also not feasible.
“Back to the future” is a famous movie about time travel, in which a time machine is attached to a DeLorean DMC-12 car. Pictured is a model of the DMC-12 modeled after the film. Source: Charitybuzz
WHAT HAPPENS WHEN TIME TRAVEL IS POSSIBLE?
The question of what if we could time travel and perform the action of the grandfather paradox still has no satisfactory answer, but recently Assoc. Barak Shoshany from Brock University, USA has stated that time travel is possible, and there will be no serious problems if we take our grandfather’s life. Feasibility but comes with 2 conditions.
As with any talk about time travel, Assoc. Barak Shoshany starts with Einstein’s theory of relativity and the problem that anyone can create an equation describing time travel that is equivalent to relativity, but going from theory to practice is not a thing. can be done right away. To make a time machine, we need negative energy – which in theory maybe created with quantum technology. But, those negative energy materials can only be created in extremely small quantities and have a very short duration – a very difficult obstacle to overcome. However, Prof. Barak Shoshany thinks “maybe” is possible.
Assoc. Barak Shoshany also holds that paradoxes (e.g. the grandfather paradox) are merely theoretical concepts, and that these theoretical concepts themselves point to inconsistency, whereas then consistent paradoxes (eg butterfly effect*) predicts that time travel is not merely a dangerous thing, time travel is necessarily not happening. Prominent physicist Stephan Hawking supports this view, but he has never proven it.
If time travel is real, what timeline are we living in?
CONDITIONS FOR POSSIBILITY OF TIME TRAVEL
Assoc. Barak Shoshany has a different view, circumventing the confusion above: We can go back in time, but we won’t be able to change anything. This idea can be explained as follows: Assuming the current flowing time stream is A, as soon as we get out of the time machine, we have reached another time flow – let’s call it A1. In the A1 timeline, we can do whatever we want, including destroying the time machine without any changes to the time machine in the original A timeline. Since we do nothing to affect the time machine in time flow A, there will not be any paradoxes. Similar to the grandfather paradox, the “grandfather” of the time flow A and A1 are different so nothing will happen.
Condition posed here with PGS’s “way” of time travel. Barak Shoshany is “time flow that can be split into different timelines”; there is also another condition that “the universe allows the flow of time to do so”. “General relativity and quantum physics tell us that time travel might be possible, but if it were to happen, then multiple cosmic flows would also have to be possible,” he said.
Of course, the foregoing is still purely a matter of conjecture and conjecture. It will be a long time before we know if time travel is actually possible.
Simply explained, Butterfly effect, also known as the butterfly effect/butterfly effect, refers to the fact that even a very small impact can have a huge effect. The name butterfly effect comes from a question about whether a butterfly in Brazil flapping its wings causes a tornado in Texas.
Meteorologist and chaos theory expert Edward Norton Lorenz was the founder of the Butterfly Effect (1972). While performing simulations of weather phenomena, Lorenz found that if he rounded up the input data, no matter how small the error, the final result was always different from the result of the data that was not. rounding; from which it is possible to draw a conclusion that a small change in the input data will lead to a large change in the result.
According to Mysterious Universe and The Conversation
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