Darwin summed it up succinctly:

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2. Kind of goes with Dunning-Kruger effect.

Dunning-Kruger effect - Wikipedia

The Dunning-Kruger effect is defined as the tendency of people with low ability in a specific area to give overly positive assessments of this ability. This is often understood as a cognitive bias, i.e. as a systematic tendency to engage in erroneous forms of thinking and judging. Biases are systematic in the sense that they occur consistently ...