Page:Public Opinion (Lippmann).djvu/405

Rh the right index numbers you can set up a competition between individual workers in a shop; between shops; between factories; between schools; between government departments; between regiments; between divisions; between ships; between states; counties; cities; and the better your index numbers the more useful the competition.

The possibilities that lie in the exchange of material are evident. Each department of government is all the time asking for information that may already have been obtained by another department, though perhaps in a somewhat different form. The State Department needs to know, let us say, the extent of the Mexican oil reserves, their relation to the rest of the world's supply, the present ownership of Mexican oil lands, the importance of oil to warships now under construction or planned, the comparative costs in different fields. How does it secure such information to-day? The information is probably scattered through the Departments of Interior, Justice, Commerce, Labor and Navy. Either a clerk in the State Department looks up Mexican oil in a book of reference, which may or may not be accurate, or somebody's private secretary telephones somebody else's private secretary, asks for a