One may ask, How, if the miller in the long run benefits, can the speculator gain? He does not intend to perform this service for nothing. Yet as the sales in the whole market equal the purchases, some say that there can be no profits to the speculator. There are unsuccessful speculators and at any rate their losses go to the successful as a sort of gambling profit. Speculators do not dine entirely on "lambs"; they are anthropophagous. But, further, the sales to legitimate purchasers should net a gain to the abler speculator. In proportion as his estimates are correct, there will remain a regular slight margin of profit to him. If he agrees to sell wheat at eighty-five cents to be delivered in three months, he expects it to be a little less at that time. In the long run the ablest speculator probably buys at a little less and sells at a little more than the price really proves to be. This means that the merchants in the long run pay something for protection against changes in prices, just as they pay something for insurance. And yet this is the cheapest way to eliminate risk, and a man engaged on a large scale in milling is, it is said, at a disadvantage if he neglects this method of marginal buying. [Sidenote: Ignorant and dishonest speculation] 4. _The buying of margins by the "lambs" is simple betting, and much manipulation of the market is dishonest._ What has just been described is the more legitimate phase of marginal buying, not its darker aspect. One who, having no special opportunities to know the market, buys or sells wheat, or other commodities or securities, on margin, is called a lamb. He is simply betting. He has no unusual skill; he cannot foresee the result. The commission paid to brokers "loads the dice" slightly; the opportunities of the larger dealer of anticipating information load the dice heavily against the lambs. Secret combinations and all kinds of false rumors cause fluctuations large enough to use up the margins of the small speculator. At times a number of powerful dealers unite to cause an artificially high or low price, a situation called "a corner." But this is little other than gambling between betters. The general public gains and loses little if any by these operations, except in the evil effects they entail socially. § III. PROMOTER'S AND TRUSTEE'S PROFITS [Sidenote: The promoter's service to the owners]