>for the simple fact if someone is any good they tend to get promoted to a new job It's nowhere near that simple. "Too good at x in X to promote to y in X, whe

>for the simple fact if someone is any good they tend to get promoted to a new job It's nowhere near that simple. "Too good at x in X to promote to y in X, where X is a career path and y is a stage above x" is fairly common.