Look at the symmetry of a face, or a leaf. I believe that if architecture reflects this natural order then it will begin to possess the same kind of depth of difference that is in nature. In many ways craft pieces have exhibited this characteristic and accompanying appeal to our senses since humans became makers of artifice. Hand-made items are never identical in the way that machine produced objects are. Historically, even the best architects and designers have resorted to simple repetition when confronted with the task of creating a lot of housing or multiple office accomodation.
Central authority prefers such certainty and it makes maintenance easier if everything is the same.
But as soon as people are able they try to break the tyranny of such monocular vision. When municipal housing was sold to its tenants in England the new owners did things like put their own windows in, add blinds and balconies and use different coloured paintwork to emphasise the fact they were not the clone of their neighbour. When there is no possibility of changing the environment in a positive way, people react, sometimes, with violence. Pruitt Igoe, in St Louis, had to be blown up. No two dwellings are ever the same because each one is finally designed in association with its intended occupants.