Dynamics Quotes - page 2
THEY who are acquainted with the present state of the theory of Symbolical Algebra, are aware, that the validity of the processes of analysis does not depend upon the interpretation of the symbols which are employed, but solely upon the laws of their combination. Every system of interpretation which does not affect the truth of the relations supposed, is equally admissible, and it is thus that the same process may, under one scheme of interpretation, represent the solution of a question on the properties of numbers, under another, that of a geometrical problem, and under a third, that of a problem of dynamics or optics. This principle is indeed of fundamental importance; and it may with safety be affirmed, that the recent advances of pure analysis have been much assisted by the influence which it has exerted in directing the current of investigation.
George Boole
In this very special form, feedback became part of the jargon of Group Dynamics, which has also assumed many of the characteristics of a cult in the efforts made to conserve some of the rigor of procedure with which Kurt Lewin and the experimentalist, Alex Bavelas, had attempted to imbue it. In this case, far from serving as a catalyzing, high-level theoretical tool, the term feedback has become a jargon-catchall for any kind of report back to government, management, the subjects of an experiment, subjects during an experiment, and so on. Stripped of its intellectual potential, the term knocks about the corridors of Unesco and for the most part those who use it have no idea that this bit of enjoined, Group Dynamic-recommended behavior is in any way related to the forbidding cross-disciplinary integration known as cybernetics.
Margaret Mead
Economic history has contributed significantly to the formulation of economic theory. Among the economists who have found history an important source for their ideas are Smith, Malthus, Marx, Marshall, Keynes, Hicks, Arrow, Friedman, Solow, and Becker. Failure to take account of history, as Simon Kuznets (1941) stressed, has often led to a misunderstanding of current economic problems by investigators who have not realized that their generalizations rested upon transient circumstances. Nowhere is the need to recognize the role of long-run dynamics more relevant than in such pressing current issues as medical care, pension policies, and development policies.
Robert Fogel