Since the beginning of medical school, I have always been astonished at the fact that my preceptors often had no idea what was going on with their patients. Many times, they resorted to prescribing Tylenol, simply telling their patients to come back if the condition became worse. Gastric ulcer? Tylenol. Terrible headache? Tylenol. Joint aches? Tylenol. Period cramps? Tylenol. Of course, they were family doctors with years and years of experience, but it came to …