earning as 
        they perform their jobs. A number of medical schools have taken this approach, 
        and I've heard of it in some MBA programs. </p>
      <p>Take the medical school example. The old paradigm for physician training 
        was a year or two of anatomy and physiology courses before students ever 
        saw a patient. The problem-centered approach has them seeing patients 
        - in teams, with a physician coach - in their first semester. They learn 
        the anatomy and