I think people tend to get promoted beyond what they can actually do. A guy who is a fabulous financial wizard isn't necessarily going to be a great leader of people and CEO, you know?

No evidence to back me up, but it's my theory on why the cream doesn't always seem to rise to the top...

Plus some GT people are quite hard to get along with. (Not all, but some.) That doesn't usually lead to promotions. Seeing the world differently freaks people out a lot of the time. There's a fine line between "vision for the future" and "nutcase."

Kriston