And even today, the West German Germany is again threatened by insolvency; reckoned the pension credits to the debt of the public hands add up to around 270% of GDP. The enormous scientific engineering advances of the 19th and 20th Century (rail travel, motorized individual transport, the conquest of the skies by airships / airplanes, electricity, telephone, etc.) changed the perception patterns of the people. The positive feelings from overcoming the fear of technology and the pride of new knowledge and skills inspired the emergence of a constructivist mentality. Progress seemed now move to the realization of social utopias within reach.