[AdrienLemaire]

Probably the Dunning-Kruger effect in action :)

Wikipedia puts it well:

> It's a cognitive bias in which people assess their cognitive ability as greater than it is. It is related to the cognitive bias of illusory superiority and comes from the inability of people to recognize their lack of ability. Without the self-awareness of metacognition, people cannot objectively evaluate their competence or incompetence.

https://en.wikipedia.org/wiki/Dunning%E2%80%93Kruger_effect

[Diesel555]

https://www.youtube.com/watch?v=y50i1bI2uN4&feature=youtu.be fun explanation.