Says Freeman: "Contrary to what we would like to believe, there is no such thing as a structureless group. Any group of people of whatever nature coming together for any length of time, for any purpose, will inevitably structure itself in some fashion. The structure may be flexible, it may vary over time, it may evenly or unevenly distribute tasks, power and resources over the members of the group. But it will be formed..."
http://flag.blackened.net/revolt/hist_texts/structurelessness.html