"The planning theory of the 20th century is dominated by a double-dualism between chaos and order. The rationality and spatial order in modern architecture compensate the increasing contingency (Kontingenz) and the fear of modernity, exemplified in the experience of chaos in the modern metropolis, by the urban development in the beginning of our century, by perceptional accommodation problems and by the situation of the society as well. But also mythical thinking helps as well to deal with the complexity of modernity. The postmodern change to less spatial order and less rationality especially in deconstructivist architecture shows the increasing possibility of perceptional accommodation and perhaps also of a higher acceptance of the contingency of modernity. The "New Simplicity" could be explained as an dialectical backlash of an ongoing accommodation process."