Thirty years ago, when my grandmother would get sick, she would go to the doctor, listen to his advice — and then do as she was told. These days, though, when my daughter gets sick and the doctor tells her to take a medicine or complete a test, her first response is to ask questions about the medicine that she's being prescribed: What is it? Why should I take it? What are the potential side effects? How much does it cost? Is there a generic alternative?