The world economy seems to be seriously ill. The problem is not overly high oil prices, but that does not rule out energy as being a major underlying problem.

Two of the symptoms of the economy’s malaise are slow wage growth and increasing wage disparity. Tariffs are being added as solutions to these issues. Radical leaders are increasingly being elected. The Bank for International Settlements and the International Monetary Fund have raised concerns about the world’s aggregate debt levels. The IMF has even suggested that a second Great Depression might be ahead if major banks should fail in the manner that Lehman Brothers did in 2008.

Figure 1. Ratio of Core Debt Growth (non-financial debt including governmental debt) to GDP, based on data of the Bank of International Settlements.

If the economy were a human being, we would send it to a physician for a diagnosis regarding what is wrong. What really is needed is a physician who has a wide overview, and thus can understand the many symptoms. Hopefully, the physician can also provide a reasonable prognosis of what lies ahead.

Individual specialists studying the world’s economic and energy problems tend to look at these problems from narrow points of view. Some examples include:

In fact, we are facing a combined problem, but most analysts/economists are looking at only their own piece of the problem. They assume that the other aspects have little or no influence on their particular result. What we really need is an analysis of the overall economic malady from a broader perspective.

In some ways, the situation is analogous to having no physician with a sufficient overview of where the world economy is headed. Instead, we have a number of specialists (perhaps analogous to a psychiatrist, a urologist, a podiatrist, and a dermatologist), none of whom really understands the underlying problem the patient is facing.

One point of confusion regarding whether today’s oil prices should be of concern is the fact that the maximum affordable oil price seems to decline over time. This happens because workers around the world increasingly cannot afford to buy the goods and services that the world economy produces. Inadequate wage growth within countries, growing globalization, and rising interest rates all contribute to this growing affordability problem. To make matters confusing, this growing affordability problem corresponds to “falling demand” in the way economists frame the issues we are facing.

If we believe the technical analysis shown in Figure 2, the maximum affordable West Texas Intermediate oil price has declined from $147 per barrel in July 2008 to $76 per barrel recently. The current price is about $62 per barrel. The chart suggests that downward price resistance might be reached at $55 per barrel, assuming no major event occurs to change the current trend line. Any upward price bounce would appear to leave the price still much lower than oil producers need in order to reinvest sufficiently to allow future oil production to be maintained at current levels.

Figure 2. Downsloping diagonal line at the top of chart gives an estimate of the trend in maximum affordable West Texas Intermediate (WTI) oil prices. The downward trend line starts in July 2008, when oil prices hit a maximum. This high point occurred when the US real estate debt bubble started unwinding. Later maximum points correspond to points when oil prices stopped rising and crude oil reservoirs started refilling. Chart prepared by Amit Noam Tal.

Thus, our concern about adequate future oil supplies should perhaps be focused on keeping oil prices high enough. It takes a growing debt bubble to keep oil demand high; perhaps our concern should be keeping this debt bubble high enough to allow extraction of commodities of all kinds, including oil. Figure 1 seems to show a recent downward trend in Debt to GDP ratios for the Eurozone, the United States, and China. This may be part of today’s low price problem for commodities of all types.

Needless to say, climate analyses do not consider the severity of our energy problems, nor do they consider the extent to which there is a connection between energy supply and the ability of the economy to operate as usual. If the real issue is a near-term financial crash that will radically affect future fossil fuel consumption, the climate analysis will certainly miss this event.

The Real Nature of the Limits to Growth Problem

To truly understand the headwinds that the economy is facing, we should be looking at the combined effect of all of the limits problems that the individual specialists have been studying. We might also include other issues not listed. The 1972 book The Limits to Growth presents an early computer model of how at least some of the limits of a finite world might be expected to play out.

Figure 3. Base scenario from 1972 Limits to Growth, printed using today’s graphics by Charles Hall and John Day in “Revisiting Limits to Growth After Peak Oil” http://www.esf.edu/efb/hall/2009-05Hall0327.pdf

This early approach reflected an engineering view of the problem, considering expected diminishing returns with respect to resources of all types. Other considerations included likely resource needs based on prior economic and population growth trends and efficiency gains. The Base Scenario shown in the 1972 book (Figure 3) showed collapse taking place about now–in other words, in the early part of the 21st century.