In medicine, the pressure to project certainty can quietly distort judgment. The philosopher of science Karl Popper argued that the mark of genuine knowledge isn't confidence — it's the willingness to specify what would change your mind. For clinicians, this translates into a concrete habit: before committing to a diagnosis, ask 'what finding would falsify this?' That single question activates what Popper called critical rationalism — not doubt for its own sake, but the disciplined openness that separates science from dogma. In a field where anchoring bias can fix an early impression like cement, falsifiability isn't just epistemology; it's patient safety.

Is there a diagnosis, treatment assumption, or professional belief you hold with confidence — and have you ever actually named what evidence would make you abandon it?

Drawing from Philosophy of Science — Karl Popper