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Cognitive bias

Why Stupid People Think They're Geniuses

By Mindwire · 7 April 2026 · 3 min read
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The people who know the least are often the loudest and most certain, while genuine experts hesitate and hedge. It looks backwards. It's the Dunning-Kruger Effect, and it comes from a single, brutal catch.

The skills you need to be good at something are the exact same skills you need to realise you're bad at it. If you don't know the rules of grammar, you also can't see your grammar mistakes. Incompetence is invisible from the inside — so a little knowledge can feel like mastery.

The flip side hits experts. The more you learn, the more you discover how much you don't know, so your confidence drops even as your ability climbs. That's why real experts sound uncertain and beginners sound sure.

The humbling lesson: confidence is a terrible measure of competence — including your own. The healthiest move is to assume there's a level above you that you can't yet see, because from inside your own skull, you can't.

Your brain just did this to you.

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