(Predestination and boostrap paradox)What will happen if we become able to change the past!!

 What will happen if we become able to change the past

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Time always moves in a linear way.It never turn back.Time is like a flowing river once,it flow never return.That's why scientists suggest us that we will never travel in past using time machine but we can travel in future.If we think to travel in past.we have to face lots of barrier and paradox.Such paradox never allow us to travel in past.

You can visit our article on time travel

https://hyphotheticalworld.blogspot.com/2020/08/time-travelfiction-or-reality.html

Let's think for a while That we become able to travel in past facing all the barrier of nature. Now, Let's think we are in past now can you change the past? Can we change our present changing the past? Today we will talk about this topic Try to understand it with the beautiful thought experiment So be ready:

predestination paradox

If we  think to travel in past we have to face the predestination paradox according to predestination paradox we can't change what has happened.You can't change the past using any external forces, energy or supernatural power if we try to change our past we may let the same incident to happen unknowingly what we want to change. Every time we try to change our past but every time that will happen in a different way.

Let's think why it happens? believe me you will be shocked knowing about it at the end of article.

 We will try to understand it using the example of a hollywood movie "the time machine "In the movie a thief killed heroine before their marriage.

The Hero of the movies was familiar to physics.He passed most of his life in a depression. He used to think why he couldn't save his beloved He tried to make a time machine. After a long period of time he becomes able to make time machine he decided to save his beloved by changing the past.He traveled in past on the same day his beloved was killed. he become able to his beloved from thief But his beloved died again due to unknown reason.he tried again to save is beloved by traveling in past but again his beloved died due to unusual reason.He tried thousands of time to save his beloved but every time she died due to different reason he couldn't save his beloved.

Finally he started to find the reason why he couldn't save his beloved.He found a reason that he made a time machine which purpose was to save his beloved. He got inspired to make time machine from his beloved death. If she was alive he couldn't be able to make time machine.

In a conclusion we can say that we can't change our past.Our past activities give idea to do anything even to travel in past.

Boostrap paradox

Let's think for a while what will happen if we become able to change the past? we may have to face boostrap paradox.we know that time moves in a linear way. Time moves from past to present and from present to future. It means our past influence the present and present influence the future.But future do not influence past. To understand it let's taken example of it. I have created this website in past that's why you are connected to me and I will work on it in future because you are connected to me.

 From this example we can conclude that one events influence another events in a linear way only.

Think if I have not created it in past. you may not have connected to me and I will not work on it in future.Future do not affect the creation of my site.My site was created in future.it means Future do not influence the past. That's why scientists suggest us it is impossible to change the past.To understand it,Let's take an example. You are reading this content, it means you are interested in science. You have bought book of theory of relativity. You started research and became a scientists. After hard labour, you became able to make time machine. You think to travel in past for experiment. You decided to meet With sir Albert Einstein to discuss theory of relativity. You travel with book in 1900A.d.when theory of relativity was not published. You met with sir Albert Einstein and asked him about law of physics mentioned in theory of relativity book.But he told you I don't know anything about it and I want to be businessman. You became upset and returned to present forgetting the book.You realized that you forgot the book but you didn't return in past for book.Later Sir Albert Einstein got the book and he decided to be a researchers. He published book you forgot on his name.Now you can't say the true origin of book,you can't decide who published the book. Generally you got the book because sir Albert Einstein published it but he became able to publish book because you left book.This is time loop.The book was published or will publish you can't people who want to change the past will wonder in a time loop.

 

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