The economic activity of a society consists of activities related to the production and consumption of goods and services. Since earliest times, the primary function of organized society has been economic in nature.
The Pentagon is a large office building, with about 6,500,000 sq ft (600,000 m 2), of which 3,700,000 sq ft (340,000 m 2) are used as offices. Approximately 23,000 military and civilian employees and about 3,000 non-defense support personnel work in the Pentagon. It has five sides, five floors above ground, two basement levels, and five ring corridors per floor with a total of 17.5 mi (28.2 km) of corridors.
Notice that the figure of about 133,000 domestic (U.S.) employees is less than one-half of the company's approximately 304,000 total (worldwide) employees at end of year 2009 (http://www.hoovers.com/company/General_Electric_Company/rfjyci-1.html).