When Astragal hosted a dinner party last weekend, he was amazed by the shoes sported by one of the guests. In theory quite high-heeled, they in fact had no heel at all and were supported on a metal cantilever coming back from the sole. This feat of engineering was, it turns out, from a company called United Nude. And Astragal was not surprised to discover the inventive hand of Rem Koolhaas was behind the gravity-defying design. He jointly owns the company, which is based in China, with the marvellously named Galahad Clark, scion of the sensible shoe company. The name of the shoe is Eamz – perhaps a deliberately misspelled architectural reference there? And obviously Rem is far from a detached superstar, just lending his name to the project. When Astragal asked for an image of the shoe, it was sent from the inbox of the great man himself.