[On ground ] It is a term from Gestalt 
psychology. Look at the ground  “around” the 
figure  of the automobile, or the ground  “around” 
any technology, necessarily has a large ground  of 
services and disservices associated with it. Now, 
the ordinary attention is fixed on the figure  rather 
than the ground , on the wheel rather than the 
huge system of road services necessary to 
maintain the existence of a wheel or wheeled 
vehicles. With a motorcar, most people are 
interested in changing designs or patterns of the 
car. They pay only incidental attentions to the 
huge service environment of roads, oil companies, 
filling stations, and other allied services of