This phenomenon is very common in real life. There is a term in psychology that precisely describes this situation, called:
People tend to only accept information that supports their existing views, avoiding or refusing to accept evidence of opposing views or facts.
Simply put, it means:
I don't want to know the truth, I just want to hear what I want to hear
Watch news only on "media that you like";
Listen to others and only select the "pleasant parts";
When encountering evidence or logic that overturns one's own viewpoint, say, "I don't believe it," "Don't tell me these things," or even get emotional.
Protect the sense of security in self-awareness
Admitting one's mistake can make one feel anxious, ashamed, or uneasy.
So I would rather deny the facts than overthrow myself.
Social circle filtering
If everyone around believes in a certain statement, people are even less willing to accept different opinions.
I am afraid of being isolated and excluded.
Too much information makes the brain lazy
The brain likes to take shortcuts, and once an opinion is formed, it is too lazy to repeatedly verify it.
I already have the answer, I don't want to hear anything new.
Don't argue head-on
People tend to be more closed when challenged with their viewpoints. Instead of arguing, it's better to ask, 'Why do you think that way?'
Plant seeds instead of forcefully instilling them
Instead of trying to change the other person immediately, it's better to provide information, tell stories, and leave some room for thinking.
Keep yourself open
It is harder to change oneself than to change others.
If you can often ask back, 'Is it possible for me to be wrong?' This is already a great growth.
Many people are not unable to accept the truth, but too afraid to lose their definition of 'who they are'.
So, if you find someone around you who insists on making mistakes and resisting facts, it's not that they're stupid, but that they're thereProtecting one's inner order。