Eventually, members of the weakest group (high or low rank) are forced to “disperse.”[4] Those members of the weak group who do not disperse are killed,[5] enslaved, or in modern times imprisoned. By most estimates, 10 to 20 percent of Stone-Age people died at the hands of other humans. The process of overshoot, followed by forced dispersal, may be seen as a sort of repetitive pumping action—a collective behavioral loop—that drove humans into every inhabitable niche.
Here is a synopsis of the behavioral loop described above:
Step 1. Individual and group behaviors are biased by the MPP to generate maximum power, which requires over-reproduction and/or over-consumption of natural resources (overshoot), whenever systemic constraints allow it. Individuals and families will form social groups to generate more power by degrading more energy. Differential power generation and accumulation result in a hierarchical group structure.Step 2. Energy is always limited, so overshoot eventually leads to decreasing power available to the group, with lower-ranking members suffering first.Step 3. Diminishing power availability creates divisive subgroups within the original group. Low-rank members will form subgroups and coalitions to demand a greater share of power from higher-ranking individuals, who will resist by forming their own coalitions to maintain power.Step 4. Violent social strife eventually occurs among subgroups who demand a greater share of the remaining power.Step 5. The weakest subgroups (high or low rank) are either forced to disperse to a new territory, are killed, enslaved, or imprisoned.Step 6. Go back to step 1.
The above loop was repeated countless thousands of times during the millions of years that we were evolving[6]. This behavior is entrained in our genetic material and will be repeated until we go extinct. Carrying capacity will decline [7] with each future iteration of the overshoot loop, and this will cause human numbers to decline until they reach levels not seen since the Pleistocene.
Current models used to predict the end of the biosphere suggest that sometime between 0.5 billion to 1.5 billion years from now, land life as we know it will end on Earth due to the combination of CO2 starvation and increasing heat. It is this decisive end that biologists and planetary geologists have targeted for attention. However, all of their graphs reveal an equally disturbing finding: that global productivity will plummet from our time onward, and indeed, it already has been doing so for the last 300 million years.[8]
It’s impossible to know the details of how our rush to extinction will play itself out, but we do know that it is going to be hell for those who are unlucky to be alive at the time.