Answer:
When my friend will be in a combat thesis troublesome tendencies. You should combat your friend's overconfidence barrier. You can make a little humble request and help him with his cognition barrier or bias. We can request him to think about the other perspective of the situation too.
We can make him understand how things might come in other ways also. We can guide him to pursue the statistics research methodology course from the recognized university or we can say that he can pursue a psychology course too.
