Organizations that are able to form reliable teams tend to accomplish more goals and provide better internal and external customer service. However, there is an unspoken tension around teams. In order for them to work effectively, everyone has to know their assignment. The distribution of work needs to be clear otherwise important items fall through the cracks.
David Allen has explored the intersection of personal productivity and teamwork. In a recent blog post he notes the following:
Have you discovered yet that no matter how big the button is that says “TEAM” you’re wearing at the conference, nobody’s on yours?! That in order to get done what you have to get done, there aren’t a lot of people at your beck and call, making sure your specific actions and projects happen? Ever have the feeling that you’ve got to hold on for dear life to your own projects and outcomes, against the hurricane of events and other people trying to get their world defined and done?

Later in the post, David considers the reason why teams fail to clarify their work.
Problem is most of us never had training or experience in dealing with that syndrome efficiently and effectively. We grew up in a world where you just went to work, and the work to be done was visible and obvious.
What is the solution to this problem? It could be as simple as acknowledging our struggles.
The best teams and relationships, from my experience, are the ones in which the players all acknowledge they’re each alone in the endeavor together. That’s when we can really experience team, and function as one.