> almost by definition, most employees are average. This is not clear to me at all. it may be that we have two equally numerous groups of employees, and the fi

> almost by definition, most employees are average. This is not clear to me at all. it may be that we have two equally numerous groups of employees, and the first class is three times as effective as the first class. In this example, no single employee is average, everyone is either 50% or 150% average workers. You can make the numbers as extreme as you want and you can think of various explanations that would explain this skills gap's existence and persistence. (Maybe we are comparing different departments, the company has normal sales reps and stellar engineers.)