Over these last hundred years since the beginning of the twentieth century, the world's population has increased from 1.6 billion to 6 billion. At the same time, people have concentrated in urban areas in ever greater numbers. As a result, society has suddenly been obliged to construct quantities of buildings rapidly and economically. In responding to this challenge, the demand has been for architecture independent of any special regional or environmental character, simple homogeneous spaces that could be factory-produced. Modernist architecture gave theoretical bases to societal demands as well as a normalized aesthetic mean. Under the ideological banner of Mies van der Rohe's dictum “Less is more,i the Modernists drew up beautiful continuous spaces on a uniform grid. While Le Corbusier's assertion that “The house is a machine for living in” found concrete expression in an idealized architecture of pure geometric forms--circles, cubes, cylinders.