156 The Stock Market Crash—dAnd After 
business problems, of fitting men and machines to- 
gether in the best possible ways, and of codrdinating 
sales and financing with the programs of production, 
that is revolutionizing the economies of business and 
rapidly enhancing the values of business securities. 
Under the influence of the industrial managers, 
modern industry saves much waste. This is a basic 
reason for the long bull market of 1922-1929.