Skills have a life cyle. That's something you learn as you get older. You are inevitably a part, an expression, of the time you grow up in. We become obsolete by the time we die. We die knowing our exact knowledge can't be replaced, it dies with us.

I think you're right, and I think that's in large parts perfectly fine. As long as the important skills that we need continually keep replenishing themselves in young people.

The problem is identifying which skills those actually are. Without an true answer, I'm going to be prudent, and assume that things involving learning and critical thinking are some of the important ones.