Dak effect
The more people don’t understand anything, the more confident they are, the more they feel good about themselves, can’t see themselves clearly or are unwilling to admit that they are not that strong.
The better a person, the more he knows to be low-key;
Dak Effect says: People often overestimate their abilities and think that they are above average; the worse the ability, the more likely they are to have an excessive evaluation of themselves. For example, on social media, we often see some people pointing out the world and making excuses in the comment section, as if only he in the world knows the best what is going on and how to deal with something. There are also some people who are clearly living a mess in their lives, but they are used to giving guidance and guiding others how to live.
On the contrary, some real business masters or professional scholars who are knowledgeable and knowledgeable are the most confident people. Because they have seen the vast world and have a sense of lack, they have a humble and awe for everything.
So how did this Dark effect mentality come about?

The first reason comes from "competitiveness".
When people evaluate themselves, they will have a kind of aspiration to be better than others or at least "middle-to-high-level". This is normal. However, some people have a strong sense of competitiveness and competitive spirit. They are always paying attention to whether they have won or better than others. Being so motivated allows them to automatically add points when evaluating their abilities, not only to brag about external things, but also to protect their self-esteem.

The second reason is that it lacks the ability of "self-awareness" and "environmental awareness".
I only know one thing, that is, I know nothing."
Please remember the famous quotes of Socrates and be willing to face your ignorance to broaden your horizons in learning, humbly accept advice from others, and always remind yourself: in the process of learning, serious progress is more important than ranking.