What does the panic ending in Japan mean?

In the movie Panic Square, only one mentally retarded person survived. The public security personnel killed the doctor and American female college students successively, but were finally killed by the architect. A group of people originally used each other's help to escape from the engineering building, but they were suspicious of each other during the action.

Finally, only the "fool" walked out of the Rubik's Cube. I don't know if this ending is bright, but what does it represent? His existence has nothing to do with experience, power, humanity, wisdom and pessimism, but all this shows that the science created by human beings can't save human beings after all. As long as the society is established, we can't get rid of the inferiority of the society itself.

To borrow someone else's words, he is as pure as a blank sheet of paper. Maybe he is like the number 0 in the tarot card, symbolizing the beginning and the end.

No matter how cruel the real society is, what is reflected in his innocent heart will always be his ideal kingdom!