Opinion: ‘What do we do with uncertainty?’ A former CDC director’s advice to new physicians and scientists
“The lines between fact, science, and uncertainty are increasingly blurred. Things once treated as dogma are being questioned. Things that were once uncertain are too often handed out as fact.”

On Monday, May 12, former CDC Director Rochelle Walensky delivered the below commencement address at the WashU School of Medicine.
One of my first tasks even before my tenure began as director of the Centers for Disease Control and Prevention was to pen an op-ed for the New York Times. It said, “I will lead with facts, science and integrity.” In retrospect, I would have refined that point and added, “and that science will change.” Why?