The Theory of Money and Credit - Ludwig von Mises [98]
Consistently and uninterruptedly continued inflation must eventually lead to collapse. The purchasing power of money will fall lower and lower, until it eventually disappears altogether. It is true that an endless process of depreciation can be imagined. We can imagine the purchasing power of money getting continually lower without ever disappearing altogether, and prices getting continually higher without it ever becoming impossible to obtain commodities in exchange for notes. Eventually this would lead to a situation in which even retail transactions were in terms of millions and billions and even higher figures; but the monetary system itself would remain.
But such an imaginary state of affairs is hardly within the bounds of possibility. In the long run, a money which continually fell in value would have no commercial utility. It could not be used as a standard of deferred payments. For all transactions in which com modities or services were not exchanged for cash, another medium would have to be sought. In fact, a money that is continually depreciating becomes useless even for cash transactions. Everybody attempts to minimize his cash reserves, which are a source of continual loss. Incoming money is spent as quickly as possible, and in the purchases that are made in order to obtain goods with a stable value in place of the depreciating money even higher prices will be agreed to than would otherwise be in accordance with market conditions at the time. When commodities that are not needed at all or at least not at the moment are purchased in order to avoid the holding of notes, then the process of extrusion of the notes from use as a general medium of exchange has already begun. It is the beginning of the "demonetization" of the notes. The process is hastened by its panic-like character. It may be possible once, twice, perhaps even three or four times, to allay the fears of the public; but eventually the affair must run its course and then there is no longer any going back. Once the depreciation is proceeding so rapidly that sellers have to reckon with considerable losses even if they buy again as quickly as is possible, then the position of the currency is hopeless.
In all countries where inflation has been rapid, it has been observed that the decrease in the value of the money has occurred faster than the increase in its quantity. If m represents the nominal amount of money present in the country before the beginning of the inflation, P the value of the monetary unit then in terms of gold, M the nominal amount of money at a given point of time during the inflation, and p the value in gold of the monetary unit at this point of time; then, as has often been shown by simple statistical investigations, mP > Mp. It has been attempted to prove from this that the money has depreciated "too rapidly" and that the level of the rate of exchange is not "justified." Many have drawn from it the conclusion that the quantity theory is obviously not true and that depreciation of money cannot be a result of an increase in its quantity. Others have conceded the truth of the quantity theory in its primitive form and argued the permissibility or even the necessity of continuing to increase the quantity of money in the country until its total gold value is restored to the level at which it stood before the beginning of the inflation, that is, until Mp = mP.
The error that is concealed in all of this is not difficult to discover. We may completely ignore the fact already referred to that the exchange rates (including the bullion rate) move in advance of the purchasing power of the money unit as expressed in the prices of commodities, so that the gold value must not be taken as a basis of operations, but purchasing power in terms of commodities, which as a rule will not have decreased to the same extent as the gold value. For this form of calculation too, in which P and p do not represent value in terms of gold but purchasing power in terms of commodities, would still as a rule