Thus, endeavors to increase or decrease the objective exchange value of money prove impracticable. A rise in the value of money leads to consequences which as a rule seem to be desired by only a small section of the community; a policy with this aim is contrary to interests which are too great for it to be able to hold its own against them in the long run. The kinds of intervention which aim at decreasing the value of money seem more popular; but their goal can be more easily and more satisfactorily reached in other ways, while their execution meets with quite insuperable difficulties.

The results of our investigation into the development and significance of monetary policy should not surprise us. That the state, after having for a period used the power which it nowadays has of influencing to some extent the determination of the objective exchange value of money in order to affect the distribution of income, should have to abandon its further exercise, will not appear strange to those who have a proper appreciation of the economic function of the state in that social order which rests upon private property in the means of production.

Observant readers may perhaps be struck by the fact that in this book no precise definition is given of the terms inflation and deflation (or restriction or contraction); that they are in fact hardly employed at all, and then only in places where nothing in particular depends upon their precision.

Variations in the objective exchange value of money evoke displacements in the distribution of income and property, on the one hand because individuals are apt to overlook the variability of the value of money, and on the other hand because variations in the value of money do not affect all economic goods and services uniformly and simultaneously.

The naive conception of money as stable in value or as a measure of value is also responsible for economic calculation being carried out in terms of money.

If we disregard the exchange of present goods for future goods, and restrict our considerations for the time being to those cases in which the only exchanges are those between present goods and present money, we shall at once observe a fundamental difference between the effects of an isolated variation in a single commodity price, emanating solely from the commodity side, and the effects of a variation in the exchange ratio between money and other economic goods in general, emanating from the monetary side.

Among the consequences of variations in the value of money it is those of variations in the exchange ratio between two different kinds of money in which economic science has been chiefly interested. This interest has been aroused by the events of monetary history. In the course of the nineteenth century international trade developed in a hitherto undreamed-of manner, and the economic connections between countries became extraordinarily close.

The problem of measuring the objective exchange value of money and its variations has attracted much more attention than its significance warrants. If all the columns of figures and tables and curves that have been prepared in this connection could perform what has been promised of them, then we should certainly have to agree that the tremendous expenditure of labor upon their construction would not have been in vain. In fact, nothing less has been hoped from them than the solution of the difficult questions connected with the problem of the objective exchange value of money.

The objective exchange value of the monetary unit can be expressed in units of any individual commodity. Just as we are in the habit of speaking of a money price of the other exchangeable goods, so we may conversely speak of the commodity price of money, and have then so many expressions for the objective exchange value of money as there are commercial commodities that are exchanged for money. But these expressions tell us little; they leave unanswered the questions that we want to solve. There are two parts to the problem of measuring the objective exchange value of money.

Nearly all the attempts that have hitherto been made to solve the problem of measuring the objective exchange value of money have started from the idea that if the price movements of a large number of commodities were combined by a particular method of calculation, the effects of those determinants of the price movements which lie on the side of the commodities would largely cancel one another out, and consequently, that such calculations would make it possible to discover the direction and extent of the effects of those determinants of price movements that lie on the monetary side.