Search up Daniel Kahneman, nobel prize winning on psychological and economical theory.
Some of his work involves two systems of thinking, biases and risk aversion.
The two systems and bias theory seem to apply to your case.
Briefly explained: We have two systems:
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the fast intuitive system, which require no effort and takes care of all functions and thoughts, which don't require deep thinking.
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the slow thinking system, which require a lot of effort. This mainly functions as a control center to orient your first system, and situations where heavy thinking is needed. Fx exams, math questions, puzzle.
Since the first system is effortless, it is much more pleasing to remain in this system, which explains our tendency to biases. Because we make presumptions to be more efficient in a daily life.
When your super intelligent friend explain stuff, and it does not immediately coincide with any of your presumptions, then it might presumptuosly be taken as true. Just out of authority, and laziness not to involve your system 2 to investigate the matter.
I hope this explaination helps abit, and I will underline that this is simply my understanding of the work.