When this book first appeared in 1972, it was part of the spirit that would define a new architecture and design era--a new way of thinking ready to move beyond the purist doctrines and formal models of modernism. Charles Jencks and Nathan Silver’s book was a manifesto for a generation that took pleasure in doing things ad hoc, using materials at hand to solve real-world problems. The implications were subversive. Turned-off citizens of the 1970s immediately adopted the book as a DIY guide.