I would argue that List of Common Misconceptions[0] belongs in any list of important or vital Wikipedia-articles.
[0] https://en.wikipedia.org/wiki/List_of_common_misconceptions
[0] https://en.wikipedia.org/wiki/List_of_common_misconceptions
https://en.wikipedia.org/wiki/List_of_cognitive_biases
really... you think you know them all but you don't. Everyone needs to understand the IKEA effect for example
I'll admit I don't see the point of many of the other cognitive biases, but at least they were coined or studied in some peer-reviewed papers.