I always wonder if it's true that we need many young people to create economic growth and prosperity A 55 year old guy in Los Angeles who can command his tech

I always wonder if it's true that we need many young people to create economic growth and prosperity A 55 year old guy in Los Angeles who can command his tech and financial stack is responsible for 500x the amount of economic growth compared to a 20 year old in Mozambique. It's about quality over quantity. That is unless the amount of work that the 55 year old puts in is just a tool to be seen as "cool enough" to hang out with the 20 years old , and be friends with guys of that age and smash the chicks. But that's a non-PC take so no economic theory would ever say it openly, and until we get an answer to this question I mantain that as far as economic growth for economic growth sake you don't need many young people otherwise Niger with 50% population between 0-14 would be something out of the Jetsons