I agree that many people may end up doing something that have not studied for. I am a Chemical Engineer and now a cryptocurrency professional.
By the way, I think that this is called "evolution" and many of the subjects you mentioned are still giving relevant information on how do develop a self-made employment.
Like Psychology, that may give a lot of information about different types of marketing
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I agree with you! In fact, I have had to take several courses and read dozens of books on human psychology in order to grow and expand my business and marketing efforts!
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