Why confidence can outpace competence
A person needs some skill not only to do a task, but also to judge how well they are doing it. When that second skill is weak, mistakes can be hard to recognize: the same gaps in knowledge that lead to poor performance also make it difficult to spot what is missing. As a result, someone may feel certain without having much reason to be.
Psychologists often call this a calibration problem: confidence and actual ability do not line up. It can show up when a person mistakes a familiar-sounding explanation for a complete one, or treats one successful attempt as proof that they have mastered a complicated task.
Why experience can make people more cautious
People with more expertise have usually encountered the edge cases, exceptions, and hidden steps that beginners do not yet see. That wider view can make them more careful about sweeping claims. Their hesitation does not necessarily mean they know less; they may simply be more aware of what a reliable answer would require.
This contrast helps explain why a confident delivery can be misleading. A fluent answer is easy to notice, while the ability to recognize uncertainty is less visible. And confidence itself is not proof of incompetence: a capable person can be decisive, just as a novice can be appropriately unsure.
What to look for instead
A better test than forcefulness is whether someone can explain their reasoning, identify what evidence would change their mind, and distinguish what they know from what they are guessing. Those habits make confidence more informative—and help keep certainty from standing in for competence.
