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Learnlets: Dunning–Kruger effect – Wikipedia, the free encyclopedia

The Dunning–Kruger effect is a cognitive bias in which unskilled people make poor decisions and reach erroneous conclusions, but their incompetence denies them the metacognitive ability to realize their mistakes.[1] The unskilled therefore suffer from illusory superiority, rating their own ability as above average, much higher than it actually is, while the highly skilled underrate their abilities, suffering from illusory inferiority.

Meta:
Came across this term while reading the article on the Pursuit of Excellence in Programming.