This is a great point. However, I would generalize a bit and say the problem is sometimes beyond ego; when someone's technical aptitude is greater than their ability to communicate. This is a more common problem than just the smartest guy in the room, and at some point you either trust each other, or agree to disagree.
That said there is an individual far worse than the brilliant teammate that's hard to understand. These are people whose ability to listen is worse than their technical aptitude. Just one of them in a meeting will destroy all progress, and disrupt any ideas that don't mesh with their preexisting thoughts.
That said there is an individual far worse than the brilliant teammate that's hard to understand. These are people whose ability to listen is worse than their technical aptitude. Just one of them in a meeting will destroy all progress, and disrupt any ideas that don't mesh with their preexisting thoughts.