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By Preston Howard: The Maximum Power Principle and Why It Underscores the Certainty of Human Extinction in the Near Future

By Preston Howard: The Maximum Power Principle and Why It Underscores the Certainty of Human Extinction in the Near Future

Howard T. Odum: co-originator of Maximum Power Principle

Today’s guest post by Preston Howard discusses an issue central to our overshoot predicament that is often ignored: The Maximum Power Principle (MPP). The MPP states that life optimizes for maximize power, not maximum efficiency, and implies that life does not look forward in time to consider the consequences of maximizing power today.

While preparing an initial report for Florida’s first Area of Critical State Concern1 in 1972, I had the immense good fortune to spend time with Howard T. Odum, an environmental engineering scientist who directed the Wetlands Center at the University of Florida. The area of state concern was the Big Cypress Preserve adjacent to the Florida Everglades. Dr Odum and several of his graduate students had ongoing studies in the area. In informal conversations, Dr Odum explained the Maximum Power Principle as described below. I believe it presents Humanity’s current situation better than anything I have seen about global warming, overshoot, or climate collapse. However, to my knowledge no one has mentioned it in any serious article except Gail Tverberg in her articles about resource consumption.

To understand the Maximum Power Principle2, let us imagine a square island, barren of any vegetation. As happened many times in Florida, suppose our island was created by fill where a shipping channel had been deepened. Situated close to the seaport, someone intended to build something on the new island, but permitting requirements and other administrative delays where taking “forever.” (These details provide a “context” for the discussion.)

The barren island does not remain barren for long, as plants soon begin to grow on it. The solar energy that bathes the island provides abundant energy for the early pioneer plants…

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Supplemental energy puts humans in charge

Supplemental energy puts humans in charge

Energy is a subject that is greatly misunderstood. Its role in our lives is truly amazing. We humans are able to live and move because of the energy that we get from food. We count this energy in calories.

Green plants are also energy dependent. In photosynthesis, plants use energy from the sun to convert carbon dioxide and water into the glucose that they need to grow.

Ecosystems are energy dependent as well. The ecologist Howard T. Odum in Environment, Power, and Society explains that ecosystems self-organize in a way that maximizes the useful energy obtained by the group of plants and animals.

Economies created by humans are in some respects very similar to ecosystems. They, too, self-organize and seem to be energy dependent. The big difference is that over one million years ago, pre-humans learned to control fire. As a result, they were able to burn biomass and indirectly add the energy this provided to the food energy that they otherwise had available. The energy from burning biomass was an early form of supplemental energy. How important was this change?

How Humans Gained Dominion Over Other Animals

James C. Scott, in Against the Grain, explains that being able to burn biomass was sufficient to turn around who was in charge: pre-humans or large animals. In one cave in South Africa, he indicates that a lower layer of remains found in the cave did not show any carbon deposits, and hence were created before pre-humans occupying the cave gained control of fire. In this layer, skeletons of big cats were found, along with scattered gnawed bones of pre-humans.

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Olduvai IV: Courage
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Olduvai II: Exodus
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