What is dream? This is an experience that happens every day, but never concretes it. In dreams and reality, it is like two different operating mechanisms. Everything in dreams gives people the feeling that it is so real, just like being in another parallel world.
Although dreams make people feel immersive, they cannot leave deep memories in their minds like what happens in reality. Except for those frightening or beautiful clips, dreams are usually forgotten after they are finished, and it is difficult to establish memory storage.

Due to the particularity of dreams, it cannot be like conventional research. There is a real object for reference and comparison, so the research is relatively difficult. At present, the mainstream scientific community still has no conclusion on the causes and purpose of dreams.
Currently, the study of dreams mainly involves two directions, one is psychology, and the other is neurobiology.
In these two directions, although some explanations of some dream phenomena have been made, no breakthroughs have been made in the causes of dreams and the purpose of dreaming in the evolutionary process.
There is another phenomenon in dreams, which is even more unexplainable with the current science and technology. This phenomenon is called "dream entrusted". The phenomenon of dream entrusted is generally a dead relative. Although the physical body has dead vital signs, it enters the dream dragged into the dream in the form of an energy body to convey some information.

For a long time, if you are serious and say with a firm view of the existence of the phenomenon of "constraining dreams", as long as you have received 9 years of compulsory education, you will think that you are unreasonable.
However, in 2014, in a serious legal program on CCTV, a program where a younger brother was killed, a dream was given to his sister, and finally assisted the police in solving the case. This episode completely overturned many people's perceptions. The time of the
incident occurred in June of that year, in 2008, a sudden disappearance occurred in a village at the foot of Changbai Mountain, Jilin Province. Anyone who has been in the countryside knows it.

In the countryside, there is almost no migrant population and the personnel composition is relatively fixed. Not to mention one person, even if a dog suddenly appears in the village, it will be identified by the villagers.
So, the same is true for a person's disappearance. If a person suddenly disappears without any hello in the countryside, it is easy to make people alert.
After calling the police, the police were in trouble with no clues about the disappearance case. Until a week later, a bloody top was found in the haystack of the missing villagers' neighbor's house. After confirmation, the top belonged to the missing villagers.
When this bloody top appeared, everyone present felt a deep heart, thinking that most of the missing villagers were in danger, so the investigation direction of this case also changed and the nature of the case also changed.

From the investigation direction of the missing case to the investigation direction of the murder case, although it is speculated that the missing villagers are likely to be in danger, the activity trajectory of the missing villagers and the place of residence are closely investigated. The rooms are clean and tidy, and there is no trace of damage to the doors and windows. No useful information was obtained at that time.
So at that time the police focused their main energy on searching for the first scene of the missing villagers' murder and the victim's body, especially the victim's body. Not only could the entire case be characterized, but also could obtain a lot of useful information from it. Based on this information, the murderer can be traced.
The police were also very anxious at that time because the extra day was delayed and the murderer had a little more chance of escaping, but due to the few clues, the case had not made much progress.
When the criminal police were at a loss when they suddenly welcomed a key figure, she was the sister of the missing villager. She married another place in the early years, and this time she returned to her hometown because of her brother's case.
She said something when she saw the local police officer in charge of the case, but this sentence shocked everyone present, and looked at each other. She said, "My brother has a dream for me. He said he has been killed and his body is buried beside the railway."

For such words, not to mention that the criminal police who have many years of experience in handling cases do not believe it, even ordinary people will not believe it. They just think that she misses her younger brother too much, thinks about her day and night, so some things about her younger brother appear in the dream.
But this sister repeatedly begged, saying that when her younger brother was sending her a dream, she had already told her the detailed location and asked the police to search with her. , otherwise she would not go back.
may give some comfort to the missing villagers' sisters, and because there is no useful clue, the police also had a hint of hope, so they ruled out the people and went to the place where they were dreaming with the sister.
Although the police went with the missing villagers' sister, they felt a little ridiculous psychologically during the trip, unlike the police's suspicious attitude.

The sisters tried hard to recall the content of the brother sending her dreams. They passed through the village, passed through the woods, drilled into the grass, and under the guidance of the dream, they finally arrived at a piece of wasteland next to the railway, which was the place where his brother sent a dream to tell her to bury the body.
When they arrived at the wasteland, the police changed their suspicion and looked solemn, because the wasteland had traces of recent activities of personnel, and there were traces of soil being turned around in an area of the wasteland.
Finally, with all efforts to dig out a male corpse. It was confirmed that it was the villager who had been missing for many days, that is, the "dream entrusting" person.
After finding the body, the police quickly locked the murderer based on the clues provided above, and finally successfully arrested the murderer.

From the entire incident, it can be seen that the sister did receive some guidance, otherwise there would be no The method accurately found the place of burying the body, but some people have different opinions on the matter of "guidance".
That is, it may be that the insider provided clues to the sister, but was afraid of being retaliated, so he quietly told his sister and then told the police in the form of a dream.
Although this possibility is not ruled out, if so, there are two things that cannot be made:
1. If it is informed, it is generally a general place It is impossible to find the place quickly and accurately like his sister, just like when I went there once before.

2. In fact, dream-entering things are also recorded in many serious documents, just like Mendeleev was guided in dreams and discovered periodic table , and Ramanujan , which is also in dreams. Under guidance, many mathematical formulas were invented. At that time, people were not clear about the role of these formulas. Until many years later, some formulas could even be used to study black holes, but in that time, people did not even have the concept of black holes.

so, I personally prefer that in the whole incident, the younger brother's dream might have happened, that is, his sister was guided by him in the dream and found his body. .
Conclusion:
Research on dreams still has a long way to go in the future. If you understand the nature of dreams, humans can choose the dream they want to have when they sleep, just like choosing the videos they like to watch. By that time, beautiful dreams will come true.
The last question is, will other animals dream besides humans?