A pretty crazy book. It talks about how group life is full of paradoxes and why it can be so difficult, sometimes, to get anywhere when working in a group.
One example I most distinctly recall dealt with how groups are created. The paradox is that when matching a group to an individual, a group looks for someone willing for forego their individuality completely for the group. An individual, however, looks for a group that will require as little of them as possible. Thus the decision is almost never mutual. The catch, though, is that for an individual to be a good group member, they must express their individuality. This is a very hard thing for people to do though because it often means dealing with anxiety.