Why is continuous learning important?

I came across a great quote on the subject from a Coursera course on Model Thinking by Scott E. Page. The subject under discussion was Solow Growth Model to understand growth of countries. I have edited it a little to set the context: “We can sort of work hard, but if we don’t invest in new technologies, in new innovation, if we don’t become sort of better at what we do, by possibly learning new models, learning new techniques, by developing new skills, we’re probably gonna level out. In fact, if you look at the data on what makes for really successful people, people who are very successful in their careers, one thing you find is they continue to learn. So, it’s almost like their own personal technology parameter (similar to investments in innovation and technology by countries). They keep upping and upping and upping. So continued growth depends on innovation and getting better. You can’t just sort of do more. At some point, the rate at which things fall off and the rate at which things increase are just gonna even out. Sustained growth requires innovation, becoming better at what you do. So just like countries have to invest in innovation, so should a person and that’s where personal growth and sort of personal success can come from.“