The correct assumption is that what individuals have learned by age twenty-one will begin to become obsolete five to ten years later and will have to be replaced-or at least refurbished-by new learning, new skills, new knowledge.
Peter DruckerNo business can do everything. Even if it has the money, it will never have enough good people. It has to set priorities. The worst thing to do is a little bit of everything. This makes sure that nothing is being accomplished. It is better to pick the wrong priority than none at all.
Peter Drucker