Vienna,
The following perhaps suffices to answer your question. It should at least get you pointed in the right direction.
From Murray Rothbard, in The Austrian Theory of the Business Cycle (http://mises.org/tradcycl/econdepr.asp):
What, then, are the causes of periodic depressions? Must we always remain agnostic about the causes of booms and busts? Is it really true that business cycles are rooted deep within the free-market economy, and that therefore some form of government planning is needed if we wish to keep the economy within some kind of stable bounds? Do booms and then busts just simply happen, or does one phase of the cycle flow logically from the other?
The currently fashionable attitude toward the business cycle stems, actually, from Karl Marx. Marx saw that, before the Industrial Revolution in approximately the late eighteenth century, there were no regularly recurring booms and depressions. There would be a sudden economic crisis whenever some king made war or confiscated the property of his subject; but there was no sign of the peculiarly modern phenomena of general and fairly regular swings in business fortunes, of expansions and contractions. Since these cycles also appeared on the scene at about the same time as modern industry, Marx concluded that business cycles were an inherent feature of the capitalist market economy. All the various current schools of economic thought, regardless of their other differences and the different causes that they attribute to the cycle, agree on this vital point: That these business cycles originate somewhere deep within the free-market economy. The market economy is to blame. Karl Marx believed that the periodic depressions would get worse and worse, until the masses would be moved to revolt and destroy the system, while the modern economists believe that the government can successfully stabilize depressions and the cycle. But all parties agree that the fault lies deep within the market economy and that if anything can save the day, it must be some form of massive government intervention.
There are, however, some critical problems in the assumption that the market economy is the culprit. For “general economic theory” teaches us that supply and demand always tend to be in equilibrium in the market and that therefore prices of products as well as of the factors that contribute to production are always tending toward some equilibrium point. Even though changes of data, which are always taking place, prevent equilibrium from ever being reached, there is nothing in the general theory of the market system that would account for regular and recurring boom-and-bust phases of the business cycle. Modern economists “solve” this problem by simply keeping their general price and market theory and their business cycle theory in separate, tightly-sealed compartments, with never the twain meeting, much less integrated with each other. Economists, unfortunately, have forgotten that there is only one economy and therefore only one integrated economic theory. Neither economic life nor the structure of theory can or should be in watertight compartments; our knowledge of the economy is either one integrated whole or it is nothing. Yet most economists are content to apply totally separate and, indeed, mutually exclusive, theories for general price analysis and for business cycles. They cannot be genuine economic scientists so long as they are content to keep operating in this primitive way.
But there are still graver problems with the currently fashionable approach. Economists also do not see one particularly critical problem because they do not bother to square their business cycle and general price theories: the peculiar breakdown of the entrepreneurial function at times of economic crisis and depression. In the market economy, one of the most vital functions of the businessman is to be an “entrepreneur,” a man who invests in productive methods, who buys equipment and hires labor to produce something which he is not sure will reap him any return. In short, the entrepreneurial function is the function of forecasting the uncertain future. Before embarking on any investment or line of production, the entrepreneur, or “enterpriser,” must estimate present and future costs and future revenues and therefore estimate whether and how much profits he will earn from the investment. If he forecasts well and significantly better than his business competitors, he will reap profits from his investment. The better his forecasting, the higher the profits he will earn. If, on the other hand, he is a poor forecaster and overestimates the demand for his product, he will suffer losses and pretty soon be forced out of the business.
The market economy, then, is a profit-and-loss economy, in which the acumen and ability of business entrepreneurs is gauged by the profits and losses they reap. The market economy, moreover, contains a built-in mechanism, a kind of natural selection, that ensures the survival and the flourishing of the superior forecaster and the weeding-out of the inferior ones. For the more profits reaped by the better forecasters, the greater become their business responsibilities, and the more they will have available to invest in the productive system. On the other hand, a few years of making losses will drive the poorer forecasters and entrepreneurs out of business altogether and push them into the ranks of salaried employees.
If, then, the market economy has a built-in natural selection mechanism for good entrepreneurs, this means that, generally, we would expect not many business firms to be making losses. And, in fact, if we look around at the economy on an average day or year, we will find that losses are not very widespread. But, in that case, the odd fact that needs explaining is this: How is it that, periodically, in times of the onset of recessions and especially in steep depressions, the business world suddenly experiences a massive cluster of severe losses? A moment arrives when business firms, previously highly astute entrepreneurs in their ability to make profits and avoid losses, suddenly and dismayingly find themselves, almost all of them, suffering severe and unaccountable losses?How come? Here is a momentous fact that any theory of depressions must explain. An explanation such as “underconsumption”–a drop in total consumer spending–is not sufficient, for one thing, because what needs to be explained is why businessmen, able to forecast all manner of previous economic changes and developments, proved themselves totally and catastrophically unable to forecast this alleged drop in consumer demand. Why this sudden failure in forecasting ability?
An adequate theory of depressions, then, must account for the tendency of the economy to move through successive booms and busts, showing no sign of settling into any sort of smoothly moving, or quietly progressive, approximation of an equilibrium situation. In particular, a theory of depression must account for the mammoth cluster of errors which appears swiftly and suddenly at a moment of economic crisis, and lingers through the depression period until recovery. And there is a third universal fact that a theory of the cycle must account for. Invariably, the booms and busts are much more intense and severe in the “capital goods industries”?the industries making machines and equipment, the ones producing industrial raw materials or constructing industrial plants?than in the industries making consumers’ goods. Here is another fact of business cycle life that must be explained–and obviously can’t be explained by such theories of depression as the popular underconsumption doctrine: That consumers aren’t spending enough on consumer goods. For if insufficient spending is the culprit, then how is it that retail sales are the last and the least to fall in any depression, and that depression really hits such industries as machine tools, capital equipment, construction, and raw materials? Conversely, it is these industries that really take off in the inflationary boom phases of the business cycle, and not those businesses serving the consumer. An adequate theory of the business cycle, then, must also explain the far greater intensity of booms and busts in the non-consumer goods, or “producers’ goods,” industries.
Fortunately, a correct theory of depression and of the business cycle does exist, even though it is universally neglected in present-day economics. It, too, has a long tradition in economic thought. This theory began with the eighteenth century Scottish philosopher and economist David Hume, and with the eminent early nineteenth century English classical economist David Ricardo. Essentially, these theorists saw that another crucial institution had developed in the mid-eighteenth century, alongside the industrial system. This was the institution of banking, with its capacity to expand credit and the money supply (first, in the form of paper money, or bank notes, and later in the form of demand deposits, or checking accounts, that are instantly redeemable in cash at the banks). It was the operations of these commercial banks which, these economists saw, held the key to the mysterious recurrent cycles of expansion and contraction, of boom and bust, that had puzzled observers since the mid-eighteenth century.