Councils for a business management and finance. Everything, as for money and operations with them (the credits, a currency exchange). And also useful information about the markets of services, real estate, securities and so forth.
Due to three-dimensional optical illusion in Ames's room (thought up in 1946) the child in a near corner seems a giant to that costs in the distant. Actually a room form - a trapeze. The effect amplifies because of the distorted chess cage.