How was the plot of Inception? Those who have seen it and understand it, please recommend it. Those who have not seen it, please watch it first. This movie is too exciting!

After thinking about it for a long time, he felt that the plot might not be that complete. However, because the movie was too good, he still wanted to ask. Especially regarding the place where he had transmigrated from the dream, it didn't seem to make sense.
1. When the male and female protagonists were trapped at the edge of the dream for the first time, why did they spend 50 years looking for a way to go home from X? Logically speaking, they were already proficient in this method at that time, and they had studied it for so long and entered so many layers of dreams. They should have known that they could wake up from X, right? And why did he wait so many years for the protagonist to save him after Saitou entered the edge of the dream? He should have known that Project X could wake up.
2. From the above two points, as long as you were at the edge of the dream, you could return to the real world by committing suicide. In other words, no matter how deep you entered the dream, you didn't have to worry about not being able to return. Suicide twice was enough. From this point of view, the worries of the main characters and the thrilling multi-layered dream crossing had complicated the problem?
3. Also, the dream where he saw the protagonist's wife on the last floor should be the fourth floor. The little girl dream maker and the rich second-generation heir used a simple method like jumping off a building to return to the dream on the previous floor. Why didn't they go to the edge of the dream? Did the plot cheat?
Hehe, don't say that I'm nitpicking. Good films always make people can't help but dig deeper into them ~
Maybe you didn't understand my question and thought that I understood it a little superficial.
Question 1 and 2. I know that you will get lost in a dream, but these people should know this as they are dreamers. Moreover, they all have totems to distinguish between dream and reality. At the beginning, the protagonist's wife already had a totem. Logically speaking, they should be able to commit suicide to the edge of the dream and then commit suicide. Then, simultaneous transmigration is unnecessary.
In fact, the main question was about the first time the main character and his wife left the edge of the dream. In the movie, when the main character was chatting with the female university student, he described how he and his wife were trapped in the edge of the dream and created a world to pass the time. The reason they were tired of this life was that they knew everything was fake. The female character's wife sealed her memories and chose to forget. This meant that they knew from the beginning that it was still a dream. However, they were still trapped there, which did not conform to the theory of disorientation.
The only explanation was that when the protagonist and his wife were trapped at the edge of the dream, the dream was still in the research stage. They didn't know that suicide could wake them up. In other words, the protagonist and his wife were the first to discover a way to return to reality by committing suicide. The edge of a dream is a realm where even dream thieves would get lost. The deepest layer of a dream is the unconscious. Totems are useless. Only the main character and his wife have the ability to distinguish between dream and reality at the edge of the dream. This explanation is a little far-fetched, but I can't think of anything else.
From the beginning to the end of the movie, the so-called transmigration should only be effective when they fell from the dream on the upper level. Jumping from the building was equivalent to falling from the dream on this level. They still didn't understand...

Answer 1

"I don't think it'll necessarily satisfy your needs, but I'll try my best to recommend a novel that's most relevant to your description." The book "Fantasy Time and Space" was written by the author in a fantasy. The general plot of this novel is as follows:

After waking up, he traveled through the chaotic world of the Spiritual Fantasy Movie World!
This was…A Spirit Illusion Spacetime!
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"Sleepwalking Movie World" was a sci-fi time-travel novel written by the author, Z Mu Yifei Mu. The general plot of this novel was:

There were familiar movies, memorable scenes, and unforgettable characters. This was the world of movies.
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"Time Travel Begins From Dreams" was a novel written by the newcomer, Lu Shu. The general plot of this novel was:

Due to a brain-computer interface implant experiment, an unknown function of the brain was accidentally activated, resulting in the quantum transmigration of consciousness. Perhaps it was a dream or a parallel universe. Movies, games, or history. After traveling through time and space, he obtained new knowledge, mysterious substances, and mysterious energy. From then on, he embarked on a different life…
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"Mysteries in Dreams" was a mystery detective and horror novel written by Mystery House. The general plot of this novel was:

I didn't know if this was reality or a dream!
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"Dream: Endless Cataclysm" was a suspense-mystery detective novel written by the author, the World of the Dead. The general plot of this novel was:

He transmigrated into a dream and obtained a magical book of revelation. An adventure began. This was not an independent world. He found the secret and led the human race to rise from the cataclysm.
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"Strange Dreams" was a novel written by the author, Du Yanshi. The general plot of this novel was:

Was it really correct? Absolute light was also absolute darkness. Everything is chaotic, but emotions are clear. Please don't forget a good dream.
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"Fantasy Night" was a suspense novel written by the author, Hehehe Cutie. The general plot of this novel was:

One night, one dream.
Dreams were a magical entrance that allowed one to meet different people and things.
It was strange because he had never encountered it before, and it was illusory because everything would disappear, leaving only a memory that could be forgotten.
Come explore the dream with me! This was a place where a person who loved to dream narrated his dreams. All the plots were dreams (there was no need to reflect reality).
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The book,"Nine Layers of Dreams," was a novel written by the author, Morning Dream Today. The general plot of the novel was:

After waking up from a dream, Chang Meng realized that the nightmare had become reality and began to erode his life.
In his despair, he obtained the method to control the dream realm and participated in other people's dreams time and time again. The crime scene that had reappeared…the Seeker who had attempted to become an immortal…In some dreams, Chang Meng saw the truth, while in others, he saw the truth that he thought he saw. And the cruelest truth was still waiting for him…
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"When Dreams Come to Reality" was a mystery detective novel written by the author's pen name. The general plot of the novel was:

Everyone had dreams when they slept at night. Whether you remembered it or not, you had experienced countless dreams since you were young. And one day, when your dream came true, what would happen?
What kind of stories would Chu Meng encounter in the dream world and how would it affect her real life when she had a dream world support system?
There was a saying about dreams. Every dream was a real world. If you didn't notice it after you woke up, it wouldn't affect your life at all. When you slowly woke up from the dream, it would also wake up in reality.
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The book,"Master Inception", was a fantasy novel written by the author, His Majesty the King. The general plot of the novel was:

The barrier between dream and reality was unbreakable. However, in the realm of dream builders, the power of dreams was extremely real. One could cultivate dreams as they pleased. Omnipotent…