A Dream of Immortality

"There have been many injuries and killings in our city recently. We hope that all residents will try not to be alone when going out. If necessary, please be careful." Hongyue looked at the 2D cat standing on the bed with two dancing feet, covering its nose with one hand, and waving back and forth with the other. "This... I'd better go to the hospital!" Hongyue took the remaining 400 yuan and went out. Night "Second-level nightmare incident occurred in our city's mental hospital" 1. Memory is the reappearance of past experiences in the brain. 2. Memory is a mental activity based on perception and thinking, including three basic processes: memorization, retention, recognition and recall. 3. Dreams are like fiction. On the basis of forgetting, imaginary and unexperienced events are used to fill in the gaps in memory. 4. In dreams, we feel that those weird things are real and real, just like people with mental illness have lost their awareness and think that hallucinations and delusions are objective realities. So "If we are in a dream, is it safe to assume that we are all mentally ill?" "Or, are psychopaths in reality just having a lucid dream?"