Let's go the the very core of this: smart old people are massively more productive than fresher minds. They know the fundamentals and they know the tricks, they

Let's go the the very core of this: smart old people are massively more productive than fresher minds. They know the fundamentals and they know the tricks, they also know themselves and their needs. They can tell youngsters that you are wasting your time and they are right. Point is: youngsters need to waste their time in order to learn life, the trade and -in this environment- in order to get something really new out of their own evolving needs in an evolving world. A corollary is that domain-specific applied problems are probably better suited to older people but unpredictable ways are easier to come from fresher minds.