What does the employer think, though? The trouble while hiring is that you generally have to assume that the worker is growing in their abilities. If there is

What does the employer think, though? The trouble while hiring is that you generally have to assume that the worker is growing in their abilities. If there is upward trajectory in their past experience, putting them in the same role is likely to be an underutilization. You are going to take a chance on offering them the next step. But at the same time people tend to peter out eventually, some sooner than others, not able to grow any further. The next step may turn out to be a step too great. Getting the job is not indicative of where one's ability lies.