Another great piece from Gail Tverberg, particularly important when it comes to understanding the depressed commodity prices affecting the NZ economy and other export dependent nations globally:
Our economy is like a pump that works increasingly slowly over time, as diminishing returns and other adverse influences affect its operation. Eventually, it is likely to stop.
As nearly as I can tell, the way economic growth occurs (and stops taking place) is as summarized in Figure 3.
Figure 3. Overview of our economic predicament
As long as (a) energy and other resources are cheap, (2) debt is readily available, and (3) “overhead” in the form of payments for government services, business overhead, and interest payments on debt are low, the pump can continue working as normal. As various parts of the pump “gum up,” the economic growth pump slows down. It is likely to eventually stop, once it becomes too difficult to repay debt with interest with the meager level of economic growth achieved.
Commodity prices are also likely to drop too low. This happens because the wages of workers drop so low that they cannot afford to buy expensive products such as cars and new homes. Growing purchases of products such as these are a big part of what keep the economic pump operating.
We all know generally how today’s economy works:
Our economy is a networked system. I have illustrated it as being similar to a child’s building toy. Ever-larger structures can be built by adding more businesses and consumers, and by using resources of various kinds to produce an increasing quantity of goods and services.
Figure 2. Dome constructed using Leonardo Sticks
There is no overall direction to the system, so the system is said to be “self-organizing.”
The economy operates within a finite world, so at some point, a problem of diminishing returns develops. In other words, it takes more and more effort (human labor and use of resources) to produce a given quantity of oil or food, or fresh water, or other desirable products. The problem of slowing economic growth is very closely related to the question: How can the limits we are reaching be expected to play…
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