Once you found yourself in a hospital for people with mental illnesses. You were placed in a ward where there was already a strange person. He had a mask on his face and sometimes talked to himself.

You may have noticed that his voice changed from speaking softly and tenderly to shouting at someone. To brighten up your stay in the gray walls of the hospital and not suffer from loneliness, you decided to talk to him.

The guy also changed the tone and style of communication when talking to you. Sometimes he threatened you and even shouted at you, and then after a while he apologized. His behavior was unpredictable.