A standard composed of several hundred commodities must therefore be, in all human probability, more stable than a standard based, as is our present gold standard, on one commodity. Bimetallists made much of this point when claiming that two metals joined together were steadier than one, just as two tipsy men walk more steadily arm in arm than separately. Still more steady is the average of a hundred commodities just as a line of a hundred tipsy men abreast and holding each other's arms will march even more steadily than two. This is because it is wholly unlikely that every man in the line will lurch in the same direction at the same instant. The lurching of some in one direction can always be depended on to offset almost entirely the lurching of others in the other direction. This theory of probabilities in its application to the present rise of prices is, I believe, borne out by the facts. After a careful study of all available evidence, I am convinced that the present general rise in prices beginning in 1896, cannot be traced to any simultaneous scarcity of goods. I refer the reader to _Why Is the Dollar Shrinking?_ where I have given the summary of the evidence. I think the facts are equally clear that the great fall in prices from 1873 to 1896 can not be laid, wholly at least, to the increasing plentifulness of goods. Finally, even if we could measure and apply an absolute standard, it is doubtful if, in practice, it would be of any more service in regulating contracts, than a multiple standard. For after all, as I have tried to show in _Appreciation and Interest_ what we want in a contract is something that is _dependable_ rather than something that is absolutely constant; and the multiple standard gives dependability in terms of the ordinary staple necessities of life. If we could know that the dollar always means a definite collection of goods, we could know that the bondholder or the salaried man who gets a stated income of $100 a month, would have the same command over actual goods, and such knowledge would be of great service. This whole subject I have discussed in Chapter X of my _Purchasing Power of Money_.