Because the war at the beginning was so destructive because of too advanced technology.
And this is what scientists mean by letting No. 1 be the leader. After so many experiences, scientists have great doubts in their minds, "Maybe the scientific level of human beings is not so high, and human beings will not go extinct so quickly."
No. 9 is actually a The adventurer (or hope) he denied No. 1 and lost a lot, but No. 9 said the words "I am justice"......
And at the end No. 1 looked at 9 No.
Perhaps it is the helplessness of religion to science.
It was a church that protected them in the first place. This actually writes the wisdom of religion...
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