Once an old man went to see a doctor. The doctor looked him over carefully and said, "Medicine won't help you. You must have a good rest. Go to bed early, drink milk, walk a lot and smoke one cigar   a day. Go to the country place for a month." After a month the man came to see the doctor again. "How are you?" said the doctor. "I'm glad to see you again. You look much younger." "Oh, doctor, I feel quite well now,"said the man. "I had a good rest. I went to bed early, drank a lot of milk and walked a lot. Your advice certainly helped me, but that you told me to smoke one cigar a day almost killed  me first. It's no joke to start smoking at my age." From what the old man said at last, we know  _
he didn't understand the doctor's advice one cigar a day was helpful to him smoking made him better than before he was clever