Ludwig von Mises and F.A. Hayek both pointed to artificial credit expansion, normally at the hands of a government-established central bank, as the nonmarket culprit. (Hayek won the Nobel Prize in 1974 for his work on what is known as Austrian business-cycle theory.) When the central bank expands the money supply — for instance, when it buys government securities — it creates the money to do so out of thin air.
This money either goes directly to commercial banks or, if the securities were purchased from an investment bank, very quickly makes its way to the commercial banks when the investment banks deposit the Fed's checks. In the same way that the price of any good tends to decline with an increase in supply, the influx of new money leads to lower interest rates, since the banks have experienced an increase in loanable funds.
The lower interest rates stimulate investment in long-term projects, which are more interest-rate sensitive than shorter-term ones. (Compare the monthly interest paid on a thirty-year mortgage with the interest paid on a two-year mortgage — a tiny drop in interest rates will have a substantial impact on the former but a negligible impact on the latter.) Additional investment in, say, research and development (R&D), which can take many years to bear fruit, will suddenly seem profitable, whereas it would not have been profitable without the lower financing costs brought about by the lower interest rates.
We describe R&D as belonging to a "higher-order" stage of production than a retail establishment selling hats, for example, since the hats are immediately available to consumers while the commercial results of R&D will not be available for a relatively long time. The closer a stage of production is to the finished consumer good to which it contributes, the lower a stage we describe it as occupying.
On the free market, interest rates coordinate production across time. They ensure that the production structure is configured in a way that conforms to consumer preferences. If consumers want more of existing goods right now, the lower-order stages of production expand. If, on the other hand, they are willing to postpone consumption in the present, interest rates encourage entrepreneurs to use this opportunity to devote factors of production to projects not geared toward satisfying immediate consumer wants, but which, once they come to fruition, will yield a greater supply of consumer goods in the future.
Had the lower interest rates in our example been the result of voluntary saving by the public instead of central-bank intervention, the relative decrease in consumption spending that is a correlate of such saving would have released resources for use in the higher-order stages of production. In other words, in the case of genuine saving, demand for consumer goods undergoes a relative decline; people are saving more and spending less than they used to.
Consumer-goods industries, in turn, undergo a relative contraction in response to the decrease in demand for consumer goods. Factors of production that these industries once used — trucking services, for instance — are now released for use in more remote stages of the structure of production. Likewise for labor, steel, and other nonspecific inputs.
When the market's freely established structure of interest rates is tampered with, this coordinating function is disrupted. Increased investment in higher-order stages of production is undertaken at a time when demand for consumer goods has not slackened. The time structure of production is distorted such that it no longer corresponds to the time pattern of consumer demand. Consumers are demanding goods in the present at a time when investment in future production is being disproportionately undertaken.
Thus, when lower interest rates are the result of central bank policy rather than genuine saving, no letup in consumer demand has taken place. (If anything, the lower rates make people even more likely to spend than before.) In this case, resources have not been released for use in the higher-order stages. The economy instead finds itself in a tug-of-war over resources between the higher- and lower-order stages of production.
With resources unexpectedly scarce, the resulting rise in costs threatens the profitability of the higher-order projects. The central bank can artificially expand credit still further in order to bolster the higher-order stages' position in the tug of war, but it merely postpones the inevitable.
If the public's freely expressed pattern of saving and consumption will not support the diversion of resources to the higher-order stages, but, in fact, pulls those resources back to those firms dealing directly in finished consumer goods, then the central bank is in a war against reality. It will eventually have to decide whether, in order to validate all the higher-order expansion, it is prepared to expand credit at a galloping rate and risk destroying the currency altogether, or whether instead it must slow or abandon its expansion and let the economy adjust itself to real conditions.