Patio and Pavilion represents the fundamental necessities of the human habitat in a series of symbols. The first necessity is for a piece of the world - the patio. The second necessity is for an enclosed space - the pavilion. These two spaces are furnished with symbols of all human needs. - This is Tomorrow exhibition catalogue statement. Patio and Pavilion was first exhibited in the Independent Groups This is Tomorrow exhibition in 1956. It represented for its creators, Peter and Alison Smithson, the fundamentals of architecture. Around the exhibit Edouardo Paolozzi and Nigel Henderson scattered objects and imagery, mostly gleaned from the East End. In 1990 the project was revived and toured. In this lecture Peter Smithson describes how his worries about the reconstruction (a notion that he had previously always opposed) on that occasion became speculations.