Special guest post by Tom Rath, author of Are You Fully Charged?: The 3 Keys to Energizing Your Work and Life The concept of bringing people together in groups, tribes, or organizations is based on the fundamental premise that human beings can do more collectively than they can in isolation. Hundreds of years ago, people banded together for the sake of sharing food and shelter and keeping their family safe. The basic assumption was that the association gained by joining a…