REM KOOLHAAS is founder of the Office for Metropolitan Architecture (O.M.A.); the firm's most important projects include the Lille Grand Palais in Lille; the Kunsthal in Rotterdam; Netherlands Dance Theatre in The Hague; Nexus Housing in Fukuoka; the Dutch House in Holland; and Villa dall'Ava in Paris, all of which are included in S,M,L,XL. Koolhaas is author of the seminal Del...