„What we call knowledge does not and cannot have the purpose of producing representations of an independent reality, but instead has an adaptive function.“

—  Ernst von Glasersfeld, Von Glasersfeld cited in: E. John Capaldi, Robert W. Proctor (1999) Contextualism in psychological research?: a critical review. p. 10
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Ernst von Glasersfeld
filósofo alemão 1917 - 2010
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„Can we call something with which the concepts of position and motion cannot be associated in the usual way, a thing, or a particle? And if not, what is the reality which our theory has been invented to describe?
The answer to this is no longer physics, but philosophy.“

—  Max Born physicist 1882 - 1970
Context: Can we call something with which the concepts of position and motion cannot be associated in the usual way, a thing, or a particle? And if not, what is the reality which our theory has been invented to describe? The answer to this is no longer physics, but philosophy. … Here I will only say that I am emphatically in favour of the retention of the particle idea. Naturally, it is necessary to redefine what is meant. For this, well-developed concepts are available which appear in mathematics under the name of invariants in transformations. Every object that we perceive appears in innumerable aspects. The concept of the object is the invariant of all these aspects. From this point of view, the present universally used system of concepts in which particles and waves appear simultaneously, can be completely justified. The latest research on nuclei and elementary particles has led us, however, to limits beyond which this system of concepts itself does not appear to suffice. The lesson to be learned from what I have told of the origin of quantum mechanics is that probable refinements of mathematical methods will not suffice to produce a satisfactory theory, but that somewhere in our doctrine is hidden a concept, unjustified by experience, which we must eliminate to open up the road. The close of his Nobel lecture: "The Statistical Interpretations of Quantum Mechanics" (11 December 1954) http://nobelprize.org/nobel_prizes/physics/laureates/1954/born-lecture.html

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„Thus we may have knowledge of the past but cannot control it; we may control the future but have no knowledge of it.“

—  Claude Elwood Shannon American mathematician and information theorist 1916 - 2001
Context: This duality can be pursued further and is related to a duality between past and future and the notions of control and knowledge. Thus we may have knowledge of the past but cannot control it; we may control the future but have no knowledge of it. Coding theorems for a discrete source with a fidelity criterion. IRE International Convention Records, volume 7, pp. 142--163, 1959.

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„Science cannot be stopped. Man will gather knowledge no matter what the consequences – and we cannot predict what they will be.“

—  Linus Pauling American scientist 1901 - 1994
Context: Science cannot be stopped. Man will gather knowledge no matter what the consequences – and we cannot predict what they will be. Science will go on — whether we are pessimistic, or are optimistic, as I am. I know that great, interesting, and valuable discoveries can be made and will be made… But I know also that still more interesting discoveries will be made that I have not the imagination to describe — and I am awaiting them, full of curiosity and enthusiasm. Lecture at Yale University, "Chemical Achievement and Hope for the Future." (October 1947) Published in Science in Progress. Sixth Series. Ed. George A. Baitsell. 100-21, (1949).

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