Human beings are slow learners

We just take, take to complete our education. That prepares us for life. So did you notice this? Why the curriculum, the grades, the graduation, school plus college. Why they take so long time? The reason again I would say we are slow learners. We are like this. We learn and forget. We learn and forget. Forget, learn, learn, forget. This keeps going on and slowly we become mature. We take a very long time