[product50]

Usually the truly brilliant are good at both - social skills and their work.

Also, if an employee is really really good, they will not make the negative curve of the graph. It is normally the fringe players who are (unfairly) impacted.

[ahomescu1]

Brilliant people are often recognized as such and don't need self-promotion. I think GP was referring to good-but-not-brilliant people (which I think there are plenty of).