V. _It prevents the possibility of a scientific Adjustment of Supply to Demand._ It has been already shown that speculation is the cause why there has never been, and cannot now be any scientific Adaptation of Supply to Demand. It has also been partially shown, at various points, that speculation, or trading in chances and fluctuations in the market has its root in the Value Principle, and that the Cost Principle extinguishes speculation. It will be proper, however, in this connection to define exactly the limits of speculation, and to point out more specifically how the Value Principle creates it, and how the Cost Principle extinguishes it. By speculation is meant, in the ordinary language of trade, risky and unusual enterprises entered upon for the sake of more than ordinary profits, and in that sense there is attached to it, among merchants, a slight shade of imputation of dishonesty or disreputable conduct. As we are seeking now, however, to employ language in an exact and scientific way, we must find a more precise definition of the term. The line between ordinary and more than ordinary profits is too vague for a scientific treatise. At one extremity of the long succession of chance-dealing and advantage-taking transactions stands gambling, which is denounced by the common verdict of mankind as merely a more specious form of robbery. It holds the same relation to robbery itself that duelling holds to murder. Where is the other end of this succession? At what point does a man begin to take an undue advantage of his fellow man in a commercial transaction? It clearly appears, from all that has been shown, that he does so from the moment that he receives from him more than an exact equivalent of cost. But it is the constant endeavor of every trader, upon any other than the Cost Principle, to do that. The business of the merchant is profit-making. _Profit_ signifies, etymologically, _something made over and above_, that is, something beyond an _equivalent_, or, in its simplest expression, _something for nothing_. It is clear, then, that there is no difference between profit-making in its mildest form, speculation in its opprobrious sense as the middle term, and gambling as the ultimate, except in degree. There is simply the bad gradation of rank which there is between the slaveholder, the driver on the slave plantation, and the slave dealer, or between the man of pleasure, the harlot, and the pimp.