selected these places with the utmost care.

     A hole in the ground is not enclosed space because, like a 
triangle or a teepee, it merely exhibits the lines of force. A 
square does not exhibit the lines of force, but is a translation 
of such tactile space into visual terms. No such translation 
occurs before writing. And anyone who takes the trouble to 
read Emile Durkheim’s The Division of Labour  can find the 
reasons why. For until sedentary life permits some 
specialization of human tasks, there is no specialization of the 
sense life such as leads to the stepping up of visual intensity. 
Anthropologists have suggested to me that any kind of carving 
or sculpture is already an indication of some stress in the visual 
area. It would seem reasonable, therefore, that nomadic people 
having very little specialization of tasks or of sense life would 
never develop rectangular spaces. But by the time they showed