This is basically critical thinking. Which is also my goal for (optimal) education: To build a society of people who think for themselves, critical thinkers; those who do not take everything for granted. The skeptics.

See also Nassim Nicolas Taleb's advice to focus on what you DON'T know rather than what you DO know.

Related to syntopical reading/learning as well. (and Charlie Munger's advice). You want to build a complete picture with a broad understanding and nuanced before formulating an opinion.

Remove bias from your judgement (especially when it comes to people or civilizations) and instead base it on logic and deep understanding.

This also relates to (national, but even local) media... How do you know that what the media portrays about something or someone is correct? Don't take it for granted, especially if it is important, and do your own research. Validity of source is important; media is often opinionized and can contain a lot of misinformation.

See also Simone Weil's thoughts on media, especially where she says misinformation spread must be stopped. It is a vital need for the soul to be presented with (factual) truth.

There is a need for intellectual humility within the community of researchers, and society in general. Do not speak confident about that which you do not know.

Relation to Charlie Munger's principle.

(2:03) "The average man can't prove of most of the things that he chooses to speak of. And still won't research and find the root of the truth that you seek of."

So true this quote. Dunning-Krueger. Ignorance. Stupidity.

Men should listen to Charlie Munger's advice: "I never allow myself to have [express] an opinion about anything that I don't know the opponent side's argument better than they do."