“Never design anything that cannot be made,” said Jean Prouvé. Born on this day 111 years ago, Prouvé always regarded himself as more of an engineer or “constructor,” than a designer. A master of materially efficient designs, his furniture has the presence of architecture, and his ideas for prefabricated houses (he designed his own house as a prototype) were influential in later developments of prefab housing. We raise our glasses to Prouvé on this day. Photo above: Jean Prouvé in front of his house, circa 1955.