„The general, and at the same time dynamic, type of analysis still remains an unwritten chapter of economic theory, the claims of innumerable “model-builders” notwithstanding… The … theoretical approach, based on the combination of the complexities of a general interdependent system with the simplifying assumptions of static analysis, constitutes the background of this investigation.“
Source: Structure of American economy, 1919-1929, 1941, p. 33, as cited in: Drejer, Ina. " The Role of Technological Linkages in a Leontief Scheme-From Static Structures to Endogenous Evolution of Technical Coefficients http://www.druid.dk/uploads/tx_picturedb/dw1999-340.pdf." Preparado para: DRUID Winter Conference, Holte (enero 1999). 1998.