Do you believe that if you go back in time, what would happen to you?

Going back in time, by your definition, is entirely possible.

Imagine a scenario 10,000 light-years away from Earth, with a huge mirror on which all the light reflected from Earth is hit. Moreover, their position is relatively stationary, and there is no object in the middle to block it, so the light on the earth will reflect back the way it is when it hits the mirror.

If you have a telescope at height, you can see the mirror, and the light in between will not diminish. So what can you see? It takes 10,000 years for the light to hit the mirror, and then it comes back to be seen by you, another 10,000 years, so you can see what happened on Earth 20,000 years ago!

If you can adjust the distance of this mirror at will, then you can see anything that is happening on Earth at any time – only the past, of course, not the future. And you can only see, not touch :)

In fact, light is a carrier, which has contained the information of all things, so as long as the light of the past is found and recoded, then all the information of the past can be reproduced.

But to the future, or to change history, that's another story.

Hehe, this kind of scientific question is very profound, I didn't believe it at all, and I still can't understand it, and I don't know if I believe it or not.

We all know Einstein's theory of relativity

In fact, many physics studies are now discussing this issue.

Theoretically, as long as the speed of an object exceeds the speed of light, it can turn back time, and I can only understand it in three-dimensional space, and I can't understand four-dimensional or multi-dimensional problems in a figurative metaphor.

But science is always advancing, like a lot of modern science, people before couldn't have imagined it

And suddenly I remembered a book from many years ago, Stephen Hawking's A Brief History of Time, which is a very interesting book that explains difficult scientific questions in very plain terms and in plain language.

Yes, according to Hawking's theory, you only need to cross the wormhole (also called the Einstein-Rosen Bridge).

I don't think time is an endless ray, but a circle. It's like the earth revolves around the sun, revolving. The Sun revolves around the Milky Way.

The expansion and collapse of the universe. Human life, old age, sickness and death are passed down from generation to generation. Endless reincarnation.

At a certain point, we go back in time. For example, a nuclear war of the century. A few survived.

The wreckage of our modern civilization will become the prehistoric civilization of the new human race in the next cycle.

I think there are a lot of problems.

The landlord said that "going back in time" means that the time and space points after the invention of the time machine are preserved, and you can go back at any time to observe and feel them in the future, but you can't change and interfere with anything at the time and space points? It's good, at least somehow the problem of the "time paradox" has been solved.

So in what form do the people who go back to observe exist? Is it the mental state that people at this point in time and space can't see or touch, or something else? And how to store, how to store (all that happens in the world after this?)

Or something happened somewhere, somewhere, at a certain time? Does the person concerned know that he or she is being stored (legal)? Stored in ** (media)?

Even if all of the above is solved, what's the point? If it's all that happens in the world after that point in space, storing only the energy needed is a big problem. If it's something that happened in a certain place or time (like a football game), how different is that from a documentary filmed in real time from multiple angles?

Does it matter whether you believe it or not?

I believe.

If there is a chance for me to go back to university, I will study hard, I will not waste my time again, and I will not miss that emotion that I will always regret.

One. If I have the opportunity to go back to university, I believe that I will make up for the majors that I have wasted and have not studied well, especially some extracurricular majors that the teacher has encouraged us to enroll, and I should apply for them, and have the opportunity to participate in some extracurricular learning and training.

Two. Books are hated less when they are used. When you don't study, you will never know what kind of help this major will help us in the future. We will increase the opportunities for many choices in terms of employment options.

Three. If we can go back to college, if we can get back to school. I think many people will grasp and cherish the things they regret or have missed.

If there is a regret pill. That we believe. A lot of things that should not be lost, missed, or cherished will allow us to grasp them well and never miss them again.

No more regrets and the same thoughts I have, so be it!

If I could go back in time, I would like to go back to my first childhood, when I was ignorant.

At that time, I lived a carefree life, free and happy, and lived happily every day. I can play with my friends, and I remember playing hide and seek, and forgetting to go home as soon as we played.

At that time, I never worried about food, clothing, housing and transportation, because my family would help you arrange it well. They have worked hard all their lives just to make our next generation live well. Now that I have grown up, there is a lot of pressure in society now, food, clothing, housing and transportation are all to be considered, in case one day you have no job and become unemployed, you will be eliminated by this society.

At that time, I wouldn't die old because I lost my temper with my friends. We had a conflict that day, and the next day Zhi Feng would happily play together. And now it's different, because of the increase in age and the number of people in contact, I found that people are unpredictable, and some people are not worthy of your deep friendship, and it is best to avoid them.

If I could turn back time, I would really like to go back to when I was a child, as long as I want to be happy, everything is with my parents. Of course, it is only if we work hard now to have a bright future.

Even if time can be reversed, the future people of our era go back to the past, not back to our current era, but back to another time and space parallel to our time, and the rewind only affects the future of that time and space, and will not have any impact on our current time and space, so, strictly speaking, time cannot be turned back, and you can see returning to another parallel time and space as a new world.

If we could turn back time, the world would be in chaos.

Maybe it's back to harmony. There are many things that can be regretted. There will be more, one more"Regret medicine"

The answer is no, time does not turn back.

It is recommended to take advantage of the time when you are young, study more when it is time to study, work hard when it is time to work, and work hard to build a good foundation for the future.

No, first you have to know what the nature of time is. For example, if it takes about 8 minutes for the sun to reach the earth, then, if you are very fast, when the sun shines for 7 minutes, you can instantly reach the sun from the earth, so can the sunlight run back to the sun? In fact, the sun is a problem, it will dry up, that is, it will stop emitting light (the law of conservation of energy will not be wrong), it is easy to understand, since energy is conserved, then the sun releases energy through nuclear fusion.

There will definitely be a day of depletion (currently the scientific community says 5 billion years from now). When the time comes, you (assuming you are alive, I think that if the assumption is not true, your children and grandchildren are still there) surpass the speed of light by 5 billion, do you think you can go back to the present?

Yes, there was a scientist who said before the concept of time that summer and winter come at six or seven o'clock in the summer and at night, and the dark night in winter comes at four or five o'clock in the afternoon, very early, but we still stipulate that the 24-hour method is still established, and time is not accurate, and it does not limit the movement of the universe and the movement of the earth, and time is made by people according to convenience, and it may be that time is almost non-existent, and the huge magnetic field of the universe cannot be said to be reversed, it should be in some kind of time and space, and it should be able to be reversed.

As I understand it, probably not. If you can, there are no old people on earth, always still in one moment.

I would say that time can be turned back, and there is regret medicine. Do you believe it yourself? In order for you to adopt, if you dare to believe it, I will dare to say it! Thank you! Good luck!

If I could turn back time, I would have exchanged everything I had, even if I had a short life of two years.

The past can never be returned, so let's face the present life.

If you could really turn back time, when would you most like to go back to?

Can you go back in time? Can the laws of the universe be broken by humans?

I don't know, I'll check it out and tell you!