1. Corbu‘s béton brut couldn‘t be cleaned, the metal–framed windows were hopelessly corroded, the electricity kept shorting out, the brise–soleils or concrete sunscreens were permanently foul with pigeon shit, the "shopping street" halfway up inside was locked and shuttered because ordinary French people prefer to do their marketing on real streets (an obvious aspect of social behaviour that eluded the intellectual grasp of the formgiver, who believed that folk ought to behave in accordance with the dotty authoritarian notions of idealist philosophes like Saint–Simon and Fourier). Saddest of all was the roof, which Corbu had imagined as a sort of concrete Acropolis dedicated to the cult of the sun and of physical culture, like a Greek palaestra, complete with pools and jogging track.