4. _The enterpriser risks his own services and accepts an indefinite chance instead of a definite amount for them._ Assuming the risk for the right conduct of industry, he backs himself, expresses his faith in himself as a manager who can make labor earn more than the prevailing wages and make capital yield more than the prevailing rate of interest. If it were otherwise, he would loan what capital he has instead of borrowing more; instead of employing others, he would himself seek employment in some other industry. Men are constantly shifting from the class of hired workers to that of enterprisers. It is a rude and often tragic process of adjustment and selection that enables men having ability as enterprisers to continue in that work, and forces others into the class of employees. [Sidenote: The enterpriser the intermediary in industry] 5. _The enterpriser is the economic buffer; economic forces are transmitted through him._ In a more primitive industry each man is wage-earner, capitalist, and enterpriser combined in one. As industry develops, some of the factors of cost become distinguishable, and relatively stable and calculable. A low rate of interest, ranging from three to four per cent., can be secured with practical certainty by putting one's money into good corporation securities, into the savings-bank, or into national bonds. Contract wages in each class of labor also are fixed by competition at a point where they are a medium or average of gains and losses. The enterpriser is the most movable element. As the specialized risk-taker, he is the spring or buffer, which takes up and distributes the strain of industry. He feels first the influence of changing conditions. If the prices of his products fall, the first loss comes upon him, and he avoids further loss as best he can by paying less for materials and labor. At such times the wage-earners look upon him as their evil genius, and usually blame him for lowering their wages, not the public for refusing to buy the product at the former high prices. Again, if prices rise, he gains from the increased value of the stock in his hand that has been produced at low cost. If the employer often appears to be a hard man, his disposition is the result of "natural selection." He is placed between the powerful, selfish forces of competition, and his economic survival is conditioned on vigilance, strength, and self-assertion. Weak generosity cannot endure. [Sidenote: Fluctuation of profits]