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I know some entrepreneurs who I think would do well in any era with any idea of the time. My office neighbor 20 years ago was selling vinyl phone book covers and did well. Now he's in SEO. And he's looking to get into healthcare devices next. His entire life is about finding sellable ideas and immersing himself in them until he's an expert.

Kind of like the idea that a bank loan officer should avoid business loans to people pursuing their passions and instead focus on the loaning to people who have hard data about why their business will make money.