People with greater expertise can see the world differently. They have a larger storehouse of procedures to apply. They notice problems more quickly. They have richer mental simulations to use in diagnosing problems and in evaluating courses of action. They have more analogies to draw upon. Expertise can also get us in trouble. It can lead us to view problems in stereotyped ways. The sense of typicality can be so strong that we miss subtle signs of trouble.
