When he was reborn, he was no longer the Alex of the past, to be precise, he was a robot with Alex's memories. Humanity wants a war machine, but also wants it to be human. A war with humanity is doomed to fail.
There is a dialogue in the film, the female lawyer said: You used a legal loophole to create a machine that thought it was a human, but it was illegal. The CEO denies, saying, it's a machine that thinks it's Alex, which is legitimate.
Machines don't lie, but humans do. They will create a hero and they will destroy a hero.
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