In the 20th century, the modern movement in architecture drew up grand plans to remake cities for the machine age. Le Corbusier, the leader of the movement, conceived his Radiant City plan. He designed every part of it himself so that it would work as he had willed it to. His machine provided the solution to four problems: inhabitation, work, recreation, circulation. Everything else was removed.
The idea of a machine city expressed three assumptions that led to the catastrophic results of modernism.