I talked about it briefly two years ago, but I didn't go into detail, so most people probably didn't get it. So I decided I would try again.
First of all, there is a lot of white space, that represents the resources available to the world and the world society or biosphere. That is everyone, you, me, and your dog. Those are all of the non-stake holders in the society. That is me relevant to the recent Wisconsin recall election. I'm not in the state anymore.
The black represents unsustainable resource consumption. The logger who decides to cut 1/10th of his land a few years in a row. It is taking more out than is replenished.
The theory is that at some point, which we may not know, a society switches from sustainable resource usage to unsustainable resource usage. Ultimately, the line is a fine line. 2,629,103 barrels of oil might be acceptable while 2,629,104 barrels is too much. I don't think oil is a great example because as I understand it, we only have a limited amount and it is created slowly. So we are well into the black.
The point is that societies fail and resource consumption seems to often be a driving factor. For example, La Paz, Arizona. Grew, extracted gold, and disappeared. I feel the model I theorize for resource use and overuse is applicable to most societies. The question then is where do we stand for all of our resources?