JEROME GROOPMAN, MD, author of the bestseller How Doctors Think, points out that even smart minds can easily be led astray by well-known cognitive biases. He teaches that during a diagnosis process, it's important to ask three procedural questions:
- What else could it be?
- Could two things be going on to explain the symptoms?
- Is there any relevant evidence that seems not to fit with the working diagnosis?
This post applies such questions to diagnosing (and treating) a mysterious stench in our school building.
Upon probing, it seems our building’s denizens have actually been enduring at least 2 odors at the same time.…

