A second possible approach to general systems theory is through the arrangement of theoretical systems and constructs in a hierarchy of complexity, roughly corresponding to the complexity of the "individuals" of the various empirical fields... leading towards a "system of systems." [...] I suggest below a possible arrangement of "levels" of theoretical discourse...(vi) [...] the "animal" level, characterized by increased mobility, teleological behavior and self-awareness...
Kenneth E. BouldingThe organization of science into disciplines sets up a series of ghettos with remarkable distances of artificial social space between them.
Kenneth E. BouldingThe use of isoquants to describe the production function did not develop to any great extent until the thirties.
Kenneth E. Boulding