Diminishing Returns Threaten World Economic Stability
Authored by Gail Tverberg via Our Finite World
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The world economy is facing a predicted contraction due to physical limits related to resource extraction and diminishing returns in various areas, including energy and minerals.
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Current economic indicators, such as high debt levels, falling oil and coal production, and rising inflation, suggest an impending downturn that will affect global living standards and government stability.
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As existing economic systems falter, new economic models are expected to emerge, though the transition period will likely be marked by financial instability, job losses, and a decrease in overall prosperity.
I predict that the world economy will shrink in the next 10 years. I think that this is bound to happen because of energy and debt limits the world economy is hitting. There are a variety of other factors involved, as well.
In this post, I will try to describe the physics-based limits that the economy is facing, related to diminishing returns of many kinds. The problem we are facing has sometimes been called “limits to growth,” or “overshoot and collapse.” Such changes tend to lead to a loss of “complexity.” They are part of the way economies evolve. I would also like to share some ideas on the changes that are likely to occur over the coming decade.
[1] The world economy is a tightly integrated physics-based system, which is experiencing diminishing returns in far more areas than just oil supply.
When extraction of a mineral takes place, usually the easiest (and cheapest) portion of the mineral deposit is extracted first. After the most productive portion is removed, the cost of extraction gradually increases. This process is described as “diminishing returns.” Generally, more energy is required to extract lower quality ores.
The economy is now reaching diminishing returns in many ways. All kinds of resources are affected, including fossil fuels, uranium, fresh water, copper, lithium, titanium, and other minerals. Even farmland is affected because with higher population, more food is required from a similar amount of arable land. Additional-cost efforts such as irrigation can increase food supply from available arable land.
The basic problem is two-fold: rising population takes place while the easiest to extract resources are depleting. The result seems to be Limits to Growth, as modeled in the 1972 book, “The Limits to Growth.” Academic research shows that problems such as those modeled (sometimes referred to as “overshoot and collapse”) have been extremely common throughout history.
Precisely how this problem unfolds varies according to the specifics of each situation. Growing debt levels and increasing wage disparity are common symptoms before collapse. Governments become vulnerable to losses in war and to being overthrown from within. Epidemics tend to spread easily because high wage disparity leads to poor nutrition for many low-wage workers. Dr. Joseph Tainter, in his book, “The Collapse of Complex Societies,” describes the situation as the loss of complexity, as a society no longer has the ability to support some of the programs it previously was able to support.
At the same time the existing economy is failing, the beginnings of new economies can be expected to start. In some sense, economies “evolve,” just as plants and animals evolve. New economies will eventually replace existing ones. These changes are a necessary part of evolution, caused by the physics of the biosphere.
In physics terms, economies are dissipative structures, just as plants, animals, and hurricanes are dissipative structures. All dissipative structures require energy supplies of some type(s) to grow and remain away from a dead state. These structures do not “live” endlessly. Instead, they come to an end and are often replaced by new, slightly different, dissipative structures.
[2] Over the next 10 years, the general direction of the economy will be toward contraction, rather than growth.
There are many indications that the world economy is hitting a turning point because of rising population and diminishing returns with respect to resource extraction. For example:
[a] Debt levels are very high in the US and other countries. A rising debt level can temporarily be used to pull an economy forward without adequate energy supplies because it indirectly gives workers and businesses more spendable income. This income can be used to work around the lack of inexpensive energy products of the preferred types in a variety of different ways:
- It can allow consumers to afford a higher price for existing energy products, if the additional funds get back to customers as higher incomes or lower taxes.
- It can allow businesses to find more efficient ways of using resources, such as ramping up international trade or building more efficient vehicles.
- It can allow the development of new energy products, such as nuclear power generation and electricity from wind and solar.
What we are finding now is that these new approaches tend to encounter bottlenecks of their own. For example, oil supply is sufficiently constrained that the current level of international trade no longer seems to be feasible. Also, wind and solar don’t directly replace oil; electricity based on wind turbines and solar panels can lead to blackouts. Furthermore, diminishing returns with respect to oil and other resources tends to get worse over time, leading to a need for ever more workarounds.
If at some point, extraction becomes more constrained and workarounds fail to provide adequate relief, added debt will lead to inflation rather than to hoped-for economic growth. Higher inflation is the issue that many advanced economies have been struggling with recently. This is an indication that the world has hit limits to growth.
[b] Because of low oil prices, companies are deciding to cut back new investments in extracting oil from shale, and likely elsewhere.
Figure 1. Brent equivalent oil prices, in 2024 US dollars, based on a combination of indications through 2023. Sources include historical oil prices in 2023$ from the 2024 Statistical Review of World Energy, published by the Energy Institute; the increase in average Brent spot price from 2023 to 2024, published by the US EIA; and the US Consumer Price Index for Urban consumers.
Figure 1 shows that oil prices rise and fall; they don’t rise endlessly. They rose after US oil production hit its first limits in 1970, but this was worked around by ramping up oil production elsewhere. Prices rose in the 2003 to 2008 period and then fell temporarily due to recession. They returned to a higher level in 2011 to 2013, but they have settled at a lower level since then.
One factor in the price decline since 2013 has been the production of US shale oil, adding to world oil supply. Another factor has been growing wage disparity, as workers from rich countries have indirectly begun to compete with workers from low-wage countries for many types of jobs. Low-wage workers cannot afford cars, motorcycles, or long-distance vacations, and this affordability issue is holding down oil demand.
US oil production from shale is in danger of collapsing during the next few years because prices are low, making new investment unprofitable for many producers. In fact, current prices for oil from shale are lower than shown on Figure 1, partly because US prices are a little lower than Brent, and partly because prices have fallen further in 2025. The recent price available for US WTI oil is only about $62 per barrel.
[c] World per capita coal production has fallen since 2014. A recent problem has been low prices.
Figure 2. World coal production through 2023 based on data of the 2024 Statistical Review of World Energy, published by the Energy Institute.
Transportation costs are a major factor in the delivered price of coal. The reduced production of coal is at least partly the result of coal mines near population centers getting mined out, and the high cost of transporting coal from more distant mines. Today’s coal prices do not seem to be high enough to accommodate the higher costs relating to diminishing returns.
[d] In theory, added debt could be used to prop up oil and coal prices, but debt levels are already very high.
Besides the problem with inflation, mentioned in point [a], there are problems with debt levels becoming unmanageably high.
Figure 3. Figure from page 10 of The Long-Term Budget Outlook 2025 to 2055, published in March 2025 by the US Congressional Budget Office.
Figure 3 shows US government debt as a ratio to GDP. If we look at the period since 2008, there was an especially large increase in debt at the time of the 2007-2009 Financial Crisis and the 2020 Pandemic. The debt level has become so high that interest on the debt is likely to require tax revenue to rise endlessly. The underlying problem is needing to pay interest on the huge amount of outstanding debt.
Putting together [a], [b], [c], and [d], the world has a huge problem. As the world economy is currently organized, it is heavily dependent on both oil and coal. Oil is heavily used in agriculture and in transportation of all kinds (cars, trucks, trains, airplanes, and ships). Coal is especially used in steel and concrete making, and in metal refining. We don’t have direct replacements for coal and oil for these uses. Wind and solar are terribly deficient at their current state of development.
The laws of physics tell us that, given the world’s current infrastructure, a reduction in the availability of both crude oil and coal will lead to cutbacks in the production of many kinds of goods and services around the world. Thus, we should expect that GDP will contract, perhaps for a long period, until workarounds for our difficulties can be developed. Today’s wind turbines and solar panels cannot solve the problem for many reasons, one of which is that fact that production and transport of these devices is dependent upon coal and oil supplies.
Thus, without adequate oil and coal to meet the needs of the world’s growing population, the world economy is being forced to gradually contract.
[3] Overall living standards can be expected to fall rather than rise during the next decade.
A recent article in the Economist shows the following chart, based on an analysis by the United Nations:
Figure 4. Chart showing global average “Human Development Index,” as calculated by the United Nations, in the Economist.
Figure 4 shows the trend in the Human Development Index as level in 2023-24. I expect that the trend will gradually shift downward in 2024-2025 and beyond. Modern advances, such as the availability of potable water in homes and the availability of electricity 24 hours per day, will become increasingly less common.
The Economist article displaying Figure 4 notes that, so far, most of the drop in living standards has happened in the poorer countries of the world. These countries were hit harder by Covid restrictions than rich countries. For example, the drop in tourism had a greater impact on less advanced countries than on rich countries. Poor countries were also affected by a decline in export orders for luxury clothing.
Outside of poor countries, young people are already finding it difficult to find jobs that pay well. They are often burdened with debt relating to advanced education, making it difficult for them to have the same standard of living that their parents had. This trend is likely to start hitting older citizens, as well. Jobs will be available, but they won’t pay well. This problem will affect both young and old.
[4] Governments will be especially vulnerable to cutbacks.
History shows that when overshoot and collapse occur, governments are likely to experience severe difficulties, indirectly because many of their citizens are getting poorer. They require more government programs, but if wages tend to be low, the taxes they pay tend to be low, too.
Unfortunately, the kinds of cutbacks being undertaken by the Department of Government Efficiency (DOGE) are very much necessary to get payments by the US government down to a level that can be supported by taxes. Regardless of how successful the current DOGE program is, I expect a huge reduction in the number of individuals on the payroll of the US government, perhaps by 50% to 75%, in the next 10 years. I also expect major cutbacks in the funding for outside organizations, such as universities and the many organizations DOGE has targeted.
At some point, the US government will need to reduce or eliminate many types of benefit payments made now. One approach might be to try to send many kinds of programs, such as job loss protection, Medicaid, and Medicare, back to the states to handle. Of course, the states would also have difficulty paying for these benefits without huge tax increases.
[5] Ten years from now, universities and colleges will enroll far fewer students.
I expect that university enrollments will fall by as much as 75% over the next 10 years, partly because government funding for universities is expected to fall. With less funding, tuition and fees are likely to be even higher than they are today. At the same time, jobs for university graduates that pay well will become less available. These considerations will lead fewer students to enroll in four-year programs. Shorter, more targeted education teaching specific skills are likely to become more popular.
There will still be some high-paying jobs available, requiring university degrees. One such area may be in finding answers to our energy and resource problems. Such research will likely be carried out by a smaller number of researchers than are active today because some current areas of research will be discarded as having too little potential benefit relative to the cost involved. Any approach considered will need to succeed with, at most, a tiny amount of government funding.
High paying jobs may also be available to a few students who plan to be the “wheeler-dealers” of the world. Some of these wheeler-dealer types will want to be the ones founding companies. Others will want to run for public office. They may be able to succeed, as well. They may want to study specialized tracks to advance their career goals. Or they may want to choose institutions where they can make contacts with people who can help them in pursuing their career goals.
For most young people, I expect that four-year university degrees will increasingly be viewed as a waste of time and money.
[6] In a shrinking economy, debt defaults will become an increasing problem.
A growing economy is very helpful in allowing financial institutions to prosper. With growth, future earnings of businesses tend to be higher than past earnings. These higher earnings make it possible repay both the borrowed amount and the required interest. With growth, there is little need to lay off employees. Thus, the employees have a reasonable chance to repay mortgage loans and car loans according to agreed-upon terms.
If an economy is shrinking, overhead becomes an ever-larger share of total revenues. This makes profits harder to achieve and may make it necessary to lay off employees. These laid-off employees are more likely to default on their outstanding loans. As debt defaults rise, interest rates charged by lenders tend to rise to compensate for the greater default risk. The higher interest rates make debt repayment for future borrowers even more difficult.
All these issues are likely to lead to financial crises, as debt defaults become more common.
[7] As debt defaults rise, banks tend to fail. This can lead to hyperinflation or deflation.
In a shrinking economy, the big question when banks fail is, “Will governments bail out the banks?”
If governments bail out the failing banks, there is a tendency toward inflation because the bailouts increase the money supply available to citizens, but not the quantity of goods available for purchase. If enough banks fail, the tendency may be toward hyperinflation–way too much money available to purchase very few goods and services.
If no government bailouts are available, the tendency is toward deflation. Without bailouts, the problem is that fewer banks are available to lend to citizens and businesses. As a result, fewer people can afford to buy homes and vehicles using debt, and fewer businesses can take out loans to purchase needed supplies. These changes lead to less demand for finished goods. This change in demand can indirectly be expected to affect commodity prices, as well, including oil prices. With low prices, some suppliers may go out of business, making any supply problem worse.
Regardless of whether bailouts are attempted or not, on average, citizens can be expected to be getting poorer and poorer as time goes on. This occurs because with a shrinking economy, fewer goods and services will be made. Unless the population shrinks at the same rate, individual citizens will find themselves getting poorer and poorer.
[8] Expect more tariffs and more conflicts among countries.
Without enough oil for transportation, the quantity of imported goods must be cut back. A tariff is a good way of doing this. If one country starts raising tariffs, the temptation is for other countries to raise tariffs in return. Thus, the overall level of tariffs can be expected to rise in future years.
Without enough goods and services for everyone to maintain their current standard of living, there will be a definite tendency for more conflict to occur. However, I doubt that the result will be World War III. For one thing, the West seems to have inadequate ammunition to fight a full-scale conventional war. For another, the nuclear bombs that are available are valuable for providing fuel for our nuclear power plants. It makes no sense to use them in war.
[9] Expect an increasing share of empty shelves, as time goes on.
High tech goods are especially likely to disappear from shelves. Replacement parts for automobiles may also be difficult to find, especially before an aftermarket of locally manufactured parts appears.
[10] Interest rates are likely to stay at their current level or increase to a higher level.
The high level of borrowing by governments and others makes lenders reluctant to lend unless the interest rates are high. It should also be noted that current interest rates are not high relative to historical standards. The world has been spoiled in recent years with artificially low interest rates, made possible by Quantitative Easing and other manipulations.
[11] Clearly, this list is not exhaustive.
The world economy has gone through two major disruptions in recent years, one in 2008, and one in 2020. Very unusual changes such as these are quite possible again.
We don’t know how soon new economies will begin to evolve. Eric Chaisson, a physicist who has researched this issue, says that there is a tendency for ever more complex, energy-dense systems to evolve over time. This would suggest that an even more advanced economy may be possible in the future.
Tyler Durden
Sat, 05/31/2025 - 18:40
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