“In reality the cycles we have the occasion to observe are generally not damped. How can the maintenance of the swings be explained? Have theses dynamic laws deduced from theory and showing damped oscillations no value in explaining the real phenomena, or in what respect do the dynamic laws need to be completed in order to explain the real happenings? They (dynamic laws) only form one element of the explanation: they solve the propagation problem. But the impulse problem remains.”

— Ragnar Frisch, Propagation problems and impulse problems in dynamic economics

Source: 1930s, Propagation problems and impulse problems in dynamic economics, 1933, p. 197

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Ragnar Frisch26

Norwegian economist 1895–1973

Mordechai Ben-Ari (1948) Israeli computer scientist

Source: Just a Theory: Exploring the Nature of Science (2005), Chapter 2, “Just a Theory: What Scientists Do” (p. 24)

“Dynamism is also the forming formula for Futurists works; i. e. dynamism is the additional element that transforms the perception of one state of phenomena to another, for example, from a static to a dynamic perception.”

Kazimir Malevich (1879–1935) Russian and Soviet artist of polish descent

Quote c. 1915 in 'Cubofuturism', Malevich, in his Essays on Art, op. cit., vol 2; as quoted in Futurism, ed. By Didier Ottinger; Centre Pompidou / 5 Continents Editions, Milan, 2008, p. 59
1910 - 1920

“The propagation problem is the problem of explaining by the structural properties of the swinging system what the character of the swings would be in case the system was started in some initial situation”

Ragnar Frisch Propagation problems and impulse problems in dynamic economics

Source: 1930s, Propagation problems and impulse problems in dynamic economics, 1933, p. 1

“We now apply these laws of mental processes, to which the explanation of our own inner consciousness leads, to explain the order and adaptation observed on the earth, i. e., to explain Being and historical development.”

Bernhard Riemann (1826–1866) German mathematician

Gesammelte Mathematische Werke (1876)

“The ancient Greeks knew the laws that govern the propagation of light in a uniform medium and upon its reflection. However, the law governing the refraction of light as it passes from one transparent medium to another was unknown until the last century. Snell discovered it, Descartes tried to explain it and Fermat criticized his explanation. Since then, many great geometers have researched the problem, although no one has yet found a way of harmonizing the law of refraction with more fundamental laws that Nature must obey.”

Pierre Louis Maupertuis (1698–1759) French mathematician, philosopher and man of letters

Accord de différentes loix de la nature qui avoient jusqu’ici paru incompatibles (1744)

“The real reason for the longevity of the neoclassical model have less to do with science, and more to do with the social dynamics of the universities that propagate it, and its appeal to a particular mindset.”

David Orrell (1962) Canadian mathematician

Source: The Other Side Of The Coin (2008), Chapter 10, Good Versus Evil, p. 304

“True revolutionary doctrine teaches that the only law is rationalism and dynamic optimism.”

Charles Stross book Singularity Sky

Source: Singularity Sky (2003), Chapter 11, “Circus of Death” (p. 234)

“Bohr's investigation had typified what had become a standard procedure in problems of theoretical physics. The first step was to discover the mathematical laws governing certain groups of phenomena; the second was to devise hypothetical models or pictures to interpret these laws in terms of motion or mechanism; the third was to examine in what way these models would behave in other respects, and this would lead to prediction of other phenomena-predictions which might or might not be confirmed when put to the test of experiment. For instance, Newton had explained the phenomena of gravitation in terms of a force of gravitation; a later age had seen the luminiferous ether introduced to explain the propagation of light and, subsequently, the general phenomena of electricity and magnetism; finally Bohr had introduced electronic jumps in an attempt to explain atomic spectra. In each case the models had fulfilled their primary purpose, but had failed to predict further phenomena with accuracy.”

James Jeans (1877–1946) British mathematician and astronomer

Physics and Philosophy (1942)

“Galaxies are observed to be simple systems following laws that result from scale-invariant dynamics which do not emanate from the haphazard merging history of halos of exotic dark matter.”

Pavel Kroupa (1963) Australian astrophysicist

Do astronomical data contradict the existence of dynamically relevant cold or dark matter? (seminar talk at Columbia U. Astronomy Department), Pavel Kroupa, 16 Oct. 2014 http://www.astro.columbia.edu/event?eid=185,

“When we approach the study of business cycle with the intention of carrying through an analysis that is truly dynamic and determinate in the above sense, we are naturally led to distinguish between two types of analyses: the micro-dynamic and the macro-dynamic types. The micro-dynamic analysis is an analysis by which we try to explain in some detail the behaviour of a certain section of the huge economic mechanism, taking for granted that certain general parameters are given. Obviously it may well be that we obtain more or less cyclical fluctuations in such sub-systems, even though the general parameters are given. The essence of this type of analysis is to show the details of the evolution of a given specific market, the behaviour of a given type of consumers, and so on.”

Ragnar Frisch Propagation problems and impulse problems in dynamic economics

Source: 1930s, Propagation problems and impulse problems in dynamic economics, 1933, p. 2

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