The Danger Zone Isn't Ignorance. It's Just Enough Knowledge to Feel Confident.

The uncomfortable core of this effect is that the same lack of skill that produces poor performance also removes the ability to accurately judge that performance — the specific competence needed to recognize a mistake is often the same competence the person hasn't yet developed. A novice doesn't just perform poorly; they lack the calibration to know it.

As skill develops, confidence often dips before it rises again, because a growing awareness of a field's complexity is itself a form of expertise — genuinely skilled people tend to have a clearer view of everything they still don't know, which makes them more cautious in their claims, not less.

The practical takeaway isn't "distrust confident people" as a blanket rule — genuine experts can be confident too. It's to treat unshakeable certainty from someone early in a domain as a signal worth double-checking, precisely because that certainty is structurally more likely at that stage than it is later on.