"Geeks" are more analytically smart than emotionally smart. They can solve any computer problem, but they create many interpersonal problems. Dennis Rodman is an example of this. He was a brilliant Basketball player, but was a misbehaving douchbag off the court. Linus Torvalds fits this description too. I am kind of this way too. I can solve any problem you give me, but I'm most likely going to piss someone off on my team in the process. But I will get the problem solved. My problem is that I don't really care about other people's feelings. When I'm right, I'm right. If you stand in my way, you can go fuck right off.

Managers need to focus on fixing the people problems that geeks create. Passion is a double edged sword. One moment everyone is singing kumbaya, the next moment they are at each other throats. Managers tend to be the opposite of geeks. They are great at emotional intelligence, but not so strong at analytical intelligence.