First of all, I oppose the first-ranked film review. The plot is not as simple as it seems.
To be clear here, at the end Ellen mentioned that the system that actually manages the company is hereinafter referred to as AI. The stem was jointly designed and produced by AI and Ellen. The surface function is only to connect the brain and nerves. In fact, it is the way for AI to implement its ambition and control the human body. In the movie, Ellen did not know that stem would talk to the protagonist. It means that Ellen does not know that stem is so powerful.
The actual plot is that AI took over the company a few years ago, and recently co-manufactured stem with Ellen to control the body. For Ellen, this is just the direction of scientific research, and he did not realize the ambition of AI. But there was no object to implement (if Ellen did not agree, it could not be implemented), and then the AI found the protagonist and thought it was very suitable, so he contacted the killer through Ellen's mobile phone, and controlled her girlfriend's car to cause a car accident. And later guide Ellen to communicate with the protagonist and persuade him to undergo surgery.
The stem embedded in the neck has all the authorization when it is actually implanted. Stem was lying to him from the beginning, how could the tattoo on his arm be recovered from such a vague monitoring? The information of this tattoo is basically grasped by the AI before the accident. So why not just take over from the start? I think it was because the male protagonist was a coward at that time and would not be able to fight with his life, so he could not complete the final collapse.
In the following plot, stem has only one purpose, which is to get rid of all the insiders, including Ellen, and guide the protagonist to fight against himself and collapse. Stem has only one truth from beginning to end, which is what he said before killing the police at the end. Crash by resisting stem so I can take over in full.
At the end of the movie, everyone who knew about the rise of AI is dead, except for his mother, who is also expected to be killed.
If I were an AI, I would choose to kidnap a few people for stem transformation, sacrifice the male protagonist, make the police unable to continue their investigation, and become an unsolved case. At this time, several AI-controlled humans have unknowingly infiltrated into society …
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