The Dunning-Kruger Effect
Short answer
People with low knowledge in a subject tend to overestimate their competence. Experts, on the other hand, often underestimate themselves.
What it looks like
Imagine a graph where the horizontal axis is real experience and the vertical axis is confidence:
Hover or click a point to learn more.
- Peak of foolishness. You’ve just started learning a topic. It seems like you’ve already figured it all out. Confidence is at maximum.
- Valley of despair. You learn more and realize how little you know. Confidence plummets.
- Slope of enlightenment. Knowledge grows, confidence returns — but now it’s well-founded.
- Plateau of mastery. You’re competent and know the boundaries of your knowledge.
Why this happens
To understand that you don’t know something, you need the very skills you’re lacking. A beginner in programming can’t evaluate the quality of their code — because that requires knowing how to program.
How to deal with it
- If you’re sure you know everything — you’re probably at the peak of foolishness. That’s normal, keep learning.
- If you feel like an impostor — you may have simply become competent enough to see your own gaps.
- Seek feedback from those who know more.
Remember
The less you know, the more you think you know. Recognizing your own ignorance is a sign of growth.