Modern medicine is infatuated with high-tech gadgetry, yet the single most powerful diagnostic tool remains the doctor-patient conversation, which can uncover the lion's share of illnesses. Dr. Danielle Ofri speaks with WNYC host Mary Harris about her new book, What Patients Say, What Doctors Hear, which proves that medicine doesn't have to work that way, and how better communication can lead to better health for all of us.