I had a roommate once who was addicted to smoking, drinking, and taking many drugs. He always did what he wanted like sang songs without tone, telling bad stories, listened to the music so loudly that I could not even study. I told him several times that it disturbs me but he did not listen. One night, I was sleeping and suddenly he came to my bed with a knife and tried to cut off my fingers. I shouted so loudly that the hall super and the others came and noticed what just happened. Then they transferred him to another room which was known as isolated.
