The structure of the optimal order should be found by scientific analysis. State of the art shifts over time. Marx's scientific socialism was based on science a century ago; it must be adapted accordingly. Laissez lave was based on too simple assumptions. Collective goods and marginal welfare...

The purpose of this paper is to bridge a communication gap between economists and public opinion. It is the author's answer to a stubborn misunderstanding. He shows why in the early phases of development concentration on labour-intensive activities maximizes national product and, consequently,...

After a brief historical survey starting around 1930, the article discusses some of the main new concepts used in development models. Thus, the Domar-Harrod principle, planning in stages, input-output, and two-gap models are discussed. From national models we have now attained a point of world...