Imagine that your existence and present are caused by all historical reasons in the past. If you go back to the past and change even a little bit of history (big or small), it may affect the subsequent historical development, and may cause factors that you don't exist, so that you can't go back to the past from now. In fact, the "grandfather paradox" provided by the scientific community on the third floor has been made very clear.
Think again, maybe we can go back in time, but for people at that time, we didn't exist in their world like ghosts. We can see, hear and understand everything at that time, but we can't participate and change.
Imagine again that if a person goes back to the past and changes history, it will inevitably affect himself, that is, what he does in the future will affect his decision to do it (everything he does after going back to the past is a future thing relative to his life, which leads him to finally decide to do time travel), which becomes a closed time cycle, which seems to be established in theory, but it is not. It's true.
Because it is impossible to travel back to the past now (it is possible to travel to the future), it is impossible to provide the scientific proof you want. A professor who can answer this question in detail, hehe, is unlikely to come here to play.
If you are not afraid of dizziness, you can search for the word "time machine" on Baidu to get a more detailed answer.
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This is an entry about "time":
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Briefly describe the film with a time machine;
Time Machine (2002)
Director: simon wells
Starring: guy pearse guy pearce Jeremy Fitzgerald
Type: Action/Science Fiction/Adventure
More Chinese titles: time machine/time room
Length: 96 minutes
Country/Region: USA
Dialogue language: English
Distribution company: AVH (Argentina Video House)
Release date: March 4, 2002, USA
Official website: Teaser Site [America] Synopsis, cast and photos.
The time machine is adapted from H.G. Will's classic novel of the same name. This novel was put on the big screen by George Pal, the father of modern science fiction movies, in the 1960s, and was adapted into a TV series in the 1970s, which was very popular. Now, in the 2 1 century, DreamWorks and Warner decided to spend $80 million to remake this classic theme, hoping to create today's glory again. It's a pity that Steven Allan Spielberg, the great director of DreamWorks, failed to do it himself. There are two directors: Simon Weir, the grandson of the original author H.G. Weil, who is one of the main directors of The Prince of Egypt, and Gregor Verbinski, who has not finished directing The Mexican for a long time. It is believed that it was Simon Will's poor health that attracted Weibinsky to make this film together. Guy pearse, who firmly attracted the audience's attention in Memories of Time Past and Los Angeles Secret, was appointed as the leading actor. It will be interesting for him to interpret the role.
Compared with the original book, the story in the film is slightly changed: the story takes place in new york, USA from 65438 to 0895. Alexander Hardkin, a young engineer, set off in his own time machine, but unexpectedly came to the future after 800,000 years. At that time, the earth people had been divided into the opposite Molo people and Elo people. Elo people are lovely and live in a peaceful world, while Molok people are just the opposite. They are monsters living in the underground world. Whenever they go into the darkness, they will go out and take the Elo away. In addition, he found a dark secret hidden behind this future world. Soon Alexander discovered the evil secret hidden behind all this, and the wonderful plot will begin. It is worth mentioning that the large-scale ultra-fine special model used in the special effects part of the film and the temporary studio specially built in Manhattan Central Park are extremely eye-catching.