The system settings from the main brain to the small miscellaneous aliens are basically based on our understanding of the human nervous system. A few obvious analogies:
Omega-brain
Alpha-neuron
extraterrestrial soldier-effector (muscle) The
basic process is that Omega (brain or central nerve) sends a signal to act on Alpha (neuron or peripheral nerve), and Alpha then confronts the soldier ( Muscles) send command signals to guide the battle. The protagonist had seen Alpha give orders to other soldiers before he died for the first time. The mechanism beyond humans is that when any one of the few Alpha (peripheral nerves) dies, Omega will automatically return to the point in time when the neuron started to work from the dormant state before the Alpha was damaged to avoid Alpha's failure. die.
When the protagonist dies for the first time and blows up a certain Alpha, certain substances in the Alpha's body (Omega's recognition protein) enter the protagonist's body, causing Omega to mistake the protagonist for the dead Alpha, so the system reverses, and so on. Therefore, most of the recognition protein is lost after the protagonist loses a lot of blood. Omega no longer thinks that the protagonist is one of Alpha, and his death will not cause the system to restart. But this kind of retreat is unconscious, just like our withdrawal reflex is a kind of unconditioned reflex, when the hand touches the needle, the hand will retract quickly.
(2)
Another NB of the extraterrestrial system that removes mutant cells is that in addition to this self-repair ability, it also has the ability to detect and remove mutations. Imagine that if your hand is pierced for a while, you will unconsciously have a withdrawal reflex, but when you find that your hand is always pierced by a needle for a certain period of time, you may have to consider whether some neurons that control your hand are manipulated. When Omega realizes that a certain Alpha in the system frequently causes the system to restart, it will consciously send a signal to the Alpha to make the protagonist see the illusion, induce it to perform certain actions and other neurons to instruct the muscles to clear Of. If humans have this ability to cancer cells, it would be a huge evolution!
(3) The last restart
At the end of the film, the protagonist successfully blows up the main brain without identifying the protein, and some substances from Omega enter the protagonist's body again to cause a restart. It is not possible to return to the time when the protagonist was caught in the boot camp. Perhaps it was due to brain damage that caused the system to deviate. Instead, he chose an earlier time when the neurons started working, that is, the protagonist woke up from the plane. But the background of this restart is that Omega has died, which is equivalent to brain death, and brain death is irreversible. It's like a person may still have a withdrawal reflex after brain death.
But in fact, this explanation is a bit far-fetched, especially in the choice of time. I think the ending of the film is set at the point where the whole family is dead and there is no loophole in logic. Maybe the setting of the end of the film is just for the plot to need a happy ending.
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