We have a distorted perception of medicine. The news we see in the media in most cases are of great medical progress. A new treatment for cancer, a new method for a transplant, a drug that can cure hepatitis, a robot that operates at a distance, etc. That has caused us to have the false conviction that Medicine can work miracles. Without a doubt it can, and the great advances that have taken place in medicine in the last two centuries are unquestionable. But it is also true that most of the medical acts performed in the world are done simply with the clinical judgment of the doctor, with no other help than his experience, his training and his intuition.