Ment
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Firstly, knowledge and experience are two different things. A person with experience, in this case, a professor, possesses extensive knowledge in the field they work in, but that doesn't mean they have more knowledge about other areas. So, this test of yours doesn't prove anything.
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You can read in Wikipedia that respect is a form of reverence. And the fact that reverence involves a degree of humility is also true, because you acknowledge that there is a person whose merits surpass yours and you lower your self-esteem.