Here's a paradox that sits at the heart of medicine: the more certain a clinician sounds, the more likely they are to stop looking. Daniel Kahneman called this 'premature closure' — the mind's tendency to lock onto a diagnosis and filter out contradicting signals — but the Zen tradition saw the same trap centuries earlier and gave it a name: 'beginner's mind' (shoshin) as the antidote. Shunryu Suzuki wrote, 'In the beginner's mind there are many possibilities, but in the expert's mind there are few.' Together, these traditions suggest something counterintuitive: clinical expertise isn't the accumulation of certainties, it's the disciplined cultivation of productive doubt — staying genuinely open even when the chart is screaming one answer. Today, when you feel most sure about a situation — medical or otherwise — treat that confidence as a cue to ask one more question you haven't asked yet.

When was the last time your confidence in a diagnosis — of a patient, a problem, or a person — caused you to stop gathering information? What did you not look for because you thought you already knew?

Drawing from Zen Buddhism / Cognitive Psychology — Shunryu Suzuki & Daniel Kahneman