It is possible to imagine an architectural element that is both a door by virtue of its operability, and a wall by virtue of its scale. When doors are enlarged to approach the scale of a wall we find spatial uses that, in the absence of this "Door/Wall", would have simply required more rooms.
Between the inside and the outside, large openings are a luxury most california homes may indulge in at minimal cost and great enhancement to interior spaces. They improve indoor air quality, natural light and views. Used in conjunction with sun visors, large openings are easily waterproofed and provide a mechanism for extending the living space into hospitable environs.