> the better-than-average people move on, and the worse-than-average people stick around. Is there any evidence for that? The "better-than-average" have to wor

> the better-than-average people move on, and the worse-than-average people stick around. Is there any evidence for that? The "better-than-average" have to work somewhere, so why should we assume that they change jobs more often? If you are an above-average workplace why should you not be able to retain above-average people?