A doctor was often stopped by one of his patients in the street and asked for his medical advice free of charge. The doctor didn’t like it and decided to put an end to this practice. One day a patient stopped him again and exclaimed, “Oh, doctor! I’m so glad to see you. I have such a bad headache.” The doctor seemed very much interested and said, “Close your eyes, open your mouth and show me your tongue.” The patient did so. Then the doctor quickly went away leaving the patient with his mouth open and tongue out. 1. Why did the patient ask the doctor for advice in the street? 2. In what way did the doctor put an end to this practice?