p.15-16 The expert not only knows what needs to be achieved, based on mature and practiced situational discrimination,
but also knows how to achieve the goal. A more subtle and refined discrimination ability is what distinguishes the
expert from the proficient performer. This ability allows the expert to discriminate among situations all seen as
similar with respect to the plan or perspective, distinguishing those situations requiring one action from those
demanding another... the expert not only sees what needs to be achieved, but also how to achieve it. When
things are proceeding normally, experts don't solve problems and don't make decisions; they simply do what experience has
shown normally works, and it normally works.
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