"Every department has that old rockstar or two who doesn't really push the boundaries of science anymore, but takes up available positions. When they retire or

"Every department has that old rockstar or two who doesn't really push the boundaries of science anymore, but takes up available positions. When they retire or die, new people come in who are still young and full of energy." Which is basically the norm for a lot of industries. I'm not even sure I mind this sort of thing so long as they are still contributing and producing. I just wish there were enough space for the young folks to do their stuff too.