Brinkmanship in the form of promised imminence of a revolution in the mechanization of design and construction of housing has been with us for many years, and it seems that revolutions of one sort or another are always taking place. The very word “revolution” itself is the small change of modern publicity and, as verbal currency, its value has become grossly depreciated, with the result that many a revolution comes and goes leaving little trace. The “revolution” of System Building has certainly come and it has been with us long enough for each of us to decide, taking into account our individual experiences, whether or not it has progressed towards the respectability of a new and exciting alternative means of construction, or whether it remains in the shadows, as a mere substitute, to be discarded when more attractive methods become available.