Impossibility quotes

From Motley Bytes Wiki
Jump to: navigation, search

American_Mottos

Willing Hearts Skillful Hands

“With willing hearts and skillful hands, the difficult we do at once; the impossible takes a bit longer.”
  • Source: Inscription on the memorial to the Seabees (U.S. Naval Construction Battalions), between Memorial Bridge and Arlington Cemetery, dedicated 1974. Also motto of the U.S. Army Corps of Engineers during World War II, according to The Home Book of American Quotations, ed. Bruce Bohle, p. 35 (1967), which says that other branches of the service also used this slogan. Newsweek, March 8, 1943, p. 34, attributes this “cocky slogan” to the Army Air Forces. A higher comparative, “The impossible we do at once; the miraculous takes a little longer,” was said to be the motto of the Army Service Forces (The New York Times, November 4, 1945, pp. 2E, 6E.) This echoes a remark attributed to Charles-Alexandre de Calonne, Louis XVI’s minister of finance. Marie Antoinette asked him something in a tone that brooked no refusal, adding that perhaps it would be difficult. He replied, “If it is only difficult, it is done; if it is impossible, we shall see.” (J. F. Michaud, Biographie Universelle, vol. 6, p. 427.)

Robert_Boyle

Good Hypothesis

“The Requisites of a good Hypothesis are:
: That It be Intelligible.
: That It neither Assume nor Suppose anything Impossible, unintelligible, or demonstrably False.
: That It be consistent with Itself.
: That It be lit and sufficient to Explicate the Phaenomena, especially the chief.
: That It be, at least, consistent, with the rest of the Phaenomena It particularly relates to, and do not contradict any other known Phaenomena of nature, or manifest Physical Truth.
 
The Qualities and Conditions of an Excellent Hypothesis are:
: That It be not Precarious, but have sufficient Grounds In the nature of the Thing Itself or at least be well recommended by some Auxiliary Proofs.
: That It be the Simplest of all the good ones we are able to frame, at least containing nothing that is superfluous or Impertinent.
: That It be the only Hypothesis that can Explicate the Phaenomena; or at least, that do's Explicate them so well.
: That it enable a skillful naturalist to foretell future Phaenomena by the Congruity or Incongruity to it; and especially the event of such experiments as are aptly devised to examine It, as Things that ought, or ought not, to be consequent to It.”
  • Source: Robert Boyle, Boyle Papers, 37. Quoted In Barbara Kaplan (ed.), Divulging of Useful Truths in Physick: The Medical Agenda of Robert Boyle (1993), 50.

Fred_Brooks

AI and Design

“The initial hope, long delayed in realization and I think impossible, was that AI techniques could not only take over much of the drudgery of routine design but even produce brilliant designs lying outside the domains usually explored by humans.”
  • Source: Brooks Jr., F. P. (2010). The Design of Design. Upper Saddle River, NJ: Addison-Wesley. ISBN: 978-0-201-36298-5. Preface.

Science of Design

“I believe ‘a science of design’ to be an impossible and indeed misleading goal.”
  • Source: Brooks Jr., F. P. (2010). The Design of Design. Upper Saddle River, NJ: Addison-Wesley. ISBN: 978-0-201-36298-5. Preface.

Thomas_Chrowder_Chamberlin

Scientific Study

"In scientific study, or, as I prefer to phrase it, in creative scholarship, the truth is the single end sought; all yields to that. The truth is supreme, not only in the vague mystical sense in which that expression has come to be a platitude, but in a special, definite, concrete sense. Facts and the immediate and necessary inductions from facts displace all pre-conceptions, all deductions from general principles, all favourite theories. Previous mental constructions are bowled over as childish play-structures by facts as they come rolling into the mind. The dearest doctrines, the most fascinating hypotheses, the most cherished creations of the reason and of the imagination perish from a mind thoroughly inspired with the scientific spirit in the presence of incompatible facts. Previous intellectual affections are crushed without hesitation and without remorse. Facts are placed before reasonings and before ideals, even though the reasonings and the ideals be more beautiful, be seemingly more lofty, be seemingly better, be seemingly truer. The seemingly absurd and the seemingly impossible are sometimes true. The scientific disposition is to accept facts upon evidence, however absurd they may appear to our pre-conceptions."
  • Source: Thomas Chrowder Chamberlin, The Ethical Functions of Scientific Study: An Address Delivered at the Annual Commencement of the University of Michigan, 28 June 1888, 7-8

Tom_DeMarco and Tim_Lister

Error Quota

"For most thinking workers, making an occasional mistake is a natural and healthy part of their work. But there can be an almost Biblical association between error on the job and sin. This is an attitude we need to take specific pains to change. Speaking to a group of software managers, we introduced a strategy for what we think of as iterative design. The idea is that some designs are intrinsically defect-prone; they ought to be rejected, not repaired. Such dead ends should be expected in the design activity. The lost effort of the dead end is a small price to pay for a clean, fresh start. To our surprise, many managers felt this would pose an impossible political problem for their own bosses: 'How can we throw away a product that our company has paid to produce?' They seemed to believe that they’d be better off salvaging the defective version even though it might cost more in the long run. Fostering an atmosphere that doesn’t allow for error simply makes people defensive. They don’t try things that may turn out badly. You encourage this defensiveness when you try to systematize the process, when you impose rigid methodologies so that staff members are not allowed to make any of the key strategic decisions lest they make them incorrectly. The average level of technology may be modestly improved by any steps you take to inhibit error. The team sociology, however, can suffer grievously. The opposite approach would be to encourage people to make some errors. You do this by asking your folks on occasion what dead-end roads they’ve been down, and by making sure they understand that 'none' is not the best answer. When people blow it, they should be congratulated — that’s part of what they’re being paid for."
  • Source: Book: Entitled: Peopleware: Productive Projects and Teams. Edition: 3rd. Written by: Tom DeMarco; Tim Lister. Date published: 1987; 1999; 2013. Publisher: Addison-Wesley. Country: USA; GBR; CAN; DEU; FRA; ESP; ZAF; AUS; JPN; SGP; MEX. Language: en. ISBN: ISBN-13: 978-0-321-93411-6 (alk paper); 0-321-93411-3 (alk paper). Chapter: 2 (Make a Cheeseburger, Sell a Cheeseburger).

Edsger_Wybe_Dijkstra

Black Box Correctness

“A convincing demonstration of correctness being impossible as long as the mechanism is regarded as a black box, our only hope lies in not regarding the mechanism as a black box.”

Michael_Faraday

Self-Correction

“Among those points of self-education which take up the form of mental discipline, there is one of great importance, and, moreover, difficult to deal with, because it involves an internal conflict, and equally touches our vanity and our ease. It consists in the tendency to deceive ourselves regarding all we wish for, and the necessity of resistance to these desires. It is impossible for any one who has not been constrained, by the course of his occupation and thoughts, to a habit of continual self-correction, to be aware of the amount of error in relation to judgment arising from this tendency. The force of the temptation which urges us to seek for such evidence and appearances as are in favour of our desires, and to disregard those which oppose them, is wonderfully great. In this respect we are all, more or less, active promoters of error. In place of practising wholesome self-abnegation, we ever make the wish the father to the thought: we receive as friendly that which agrees with, we resist with dislike that which opposes us; whereas the very reverse is required by every dictate of common sense.”
  • Source: Michael Faraday. Royal Institution Lecture On Mental Education (6 May 1854), as reprinted in Experimental Researches in Chemistry and Physics, by Michael Faraday, 1859, pp 474-475.

Richard_Feynman

Same Circumstances

“Philosophers have said that if the same circumstances don't always produce the same results, predictions are impossible and science will collapse. Here is a circumstance — identical photons are always coming down in the same direction to the piece of glass — that produces different results. We cannot predict whether a given photon will arrive at A or B. All we can predict is that out of 100 photons that come down, an average of 4 will be reflected by the front surface. Does this mean that physics, a science of great exactitude, has been reduced to calculating only the probability of an event, and not predicting exactly what will happen? Yes. That's a retreat, but that's the way it is: Nature permits us to calculate only probabilities. Yet science has not collapsed.”
  • Source: Feynman, R. P. (1983). QED: The Strange Theory of Light and Matter. Princeton, NJ: Princeton University Press. Page 19.

Henry_Ford

Charity

“Why should there by any necessity for almsgiving in a civilized community? It is not the charitable mind to which I object. Heaven forbid that we should ever grow cold toward a fellow creature in need. Human sympathy is too fine for the cool, calculating attitude to take its place. One can name very few great advances that did not have human sympathy behind them. It is in order to help people that every notable service is undertaken. The trouble is that we have been using this great, fine motive force for ends too small. If human sympathy prompts us to feed the hungry, why should it not give the larger desire – to make hunger in our midst impossible? If we have sympathy enough for people to help them out of their troubles, surely we ought to have sympathy enough to keep them out.”
  • Source: Henry Ford. A book. Entitled My Life and Work. Written by Henry Ford in collaboration with Samuel Crowther. Published 1922, Garden City, NY: Doubleday. Chapter XV.

Gordon_Glegg

Engineering the Impossible

“One of the intriguing facts of the engineering profession is that it is not only possible but essential to do the impossible. But we must be careful to define what we mean by that word. We must distinguish between the relatively impossible and the intrinsically impossible. The relative impossibility is something which is impossible unless something else becomes possible. It always includes or implies a clause beginning 'unless'. The intrinsic impossibility contains an imprisoned self-contradiction within itself; it is absolutely impossible.”
  • Source: Glegg, G. L. (1969). The Design of Design. Cambridge, UK: Cambridge University Press. ISBN: 978-0-511-79996-9. Chapter 1 page 5.

Fred_Hoyle

Scientific Hypotheses

“It is often held that scientific hypotheses are constructed, and are to be constructed, only after a detailed weighing of all possible evidence bearing on the matter, and that then and only then may one consider, and still only tentatively, any hypotheses. This traditional view however, is largely incorrect, for not only is it absurdly impossible of application, but it is contradicted by the history of the development of any scientific theory. What happens in practice is that by intuitive insight, or other inexplicable inspiration, the theorist decides that certain features seem to him more important than others and capable of explanation by certain hypotheses. Then basing his study on these hypotheses the attempt is made to deduce their consequences. The successful pioneer of theoretical science is he whose intuitions yield hypotheses on which satisfactory theories can be built, and conversely for the unsuccessful (as judged from a purely scientific standpoint).”
  • Source: Sir Fred Hoyle, Co-author with British astronomer, Raymond Arthur Lyttleton (1911-95), 'The Internal Constitution of the Stars', Occasional Notes of the Royal Astronomical Society 1948, 12, 90.

Lawrence_M_Krauss

Think the Unthinkable

“Science has taught us to think the unthinkable. Because when nature is the guide—rather than a priori prejudices, hopes, fears or desires — we are forced out of our comfort zone. One by one, pillars of classical logic have fallen by the wayside as science progressed in the 20th century, from Einstein's realization that measurements of space and time were not absolute but observer-dependent, to quantum mechanics, which not only put fundamental limits on what we can empirically know but also demonstrated that elementary particles and the atoms they form are doing a million seemingly impossible things at once.”
  • Source: Lawrence M. Krauss, In op-ed, 'A Universe Without Purpose', Los Angeles Times (1 Apr 2012).

Pierre-Simon_Laplace

System of Nature

“The present state of the system of nature is evidently a consequence of what it was in the preceding moment, and if we conceive of an intelligence that at a given instant comprehends all the relations of the entities of this universe, it could state the respective position, motions, and general affects of all these entities at any time in the past or future. Physical astronomy, the branch of knowledge that does the greatest honor to the human mind, gives us an idea, albeit imperfect, of what such an intelligence would be. The simplicity of the law by which the celestial bodies move, and the relations of their masses and distances, permit analysis to follow their motions up to a certain point; and in order to determine the state of the system of these great bodies in past or future centuries, it suffices for the mathematician that their position and their velocity be given by observation for any moment in time. Man owes that advantage to the power of the instrument he employs, and to the small number of relations that it embraces in its calculations. But ignorance of the different causes involved in the production of events, as well as their complexity, taken together with the imperfection of analysis, prevents our reaching the same certainty about the vast majority of phenomena. Thus there are things that are uncertain for us, things more or less probable, and we seek to compensate for the impossibility of knowing them by determining their different degrees of likelihood. So it was that we owe to the weakness of the human mind one of the most delicate and ingenious of mathematical theories, the science of chance or probability.”
  • Source: Pierre-Simon Laplace, 'Recherches, 1º, sur l'Intégration des Équations Différentielles aux Différences Finies, et sur leur Usage dans la Théorie des Hasards' (1773, published 1776). In Oeuvres complètes de Laplace, 14 Vols. (1843-1912), Vol. 8, 144-5, trans. Charles Coulston Gillispie, Pierre-Simon Laplace 1749-1827: A Life in Exact Science (1997), 26.

Karl_Marx

Feminine Ferment

“Everyone who knows anything of history also knows that great social revolutions are impossible without the feminine ferment. Social progress may be measured precisely by the social position of the fair sex (plain ones included).”
  • Source: Letter to Ludwig Kugelmann, dated 12 December 1868.

Alan_Perlis

Programming Impossible for Most

Most people find the concept of programming obvious, but the doing impossible.”

Simplicity Gets in the Way

“In seeking the unattainable, simplicity only gets in the way. If there are epigrams, there must be meta-epigrams.”

Karl_Popper

Scientific Knowledge

“If the picture of the world which modern science draws comes anywhere near the truth — in other words, if we have anything like ‘scientific knowledge’ — then the conditions obtaining almost everywhere in the universe make the discovery of structural laws of the kind we are seeking — and thus the attainment of ‘scientific knowledge’ — almost impossible. For almost all regions of the universe are filled by chaotic radiation, and almost all the rest by matter in a likewise chaotic state. In spite of this, science has been miraculously successful in proceeding toward what I think should be regarded as its aim. This strange fact cannot, I think, be explained without proving too much. But it can encourage us to pursue that aim, even though we may not get any further encouragement to believe that we can actually attain it; neither from metaphysical realism nor from any other source.”
  • Source: Realism and the Aim of Science: From the Postscript to The Logic of Scientific Discovery, 1983, p. 146, ISBN 0415084008

Nicholas_Rescher

Inherent Unpredictability

“The inherent unpredictability of future scientific developments — the fact that no secure inference can be drawn from one state of science to another — has important implications for the issue of the limits of science. It means that present-day science cannot speak for future science: it is in principle impossible to make any secure inferences from the substance of science at one time about its substance at a significantly different time. The prospect of future scientific revolutions can never be precluded. We cannot say with unblinking confidence what sorts of resources and conceptions the science of the future will or will not use. Given that it is effectively impossible to predict the details of what future science will accomplish, it is no less impossible to predict in detail what future science will not accomplish. We can never confidently put this or that range of issues outside 'the limits of science', because we cannot discern the shape and substance of future science with sufficient clarity to be able to say with any assurance what it can and cannot do. Any attempt to set 'limits' to science — any advance specification of what science can and cannot do by way of handling problems and solving questions — is destined to come to grief.”
  • Source: Nicholas Rescher, The Limits of Science (1984), 102-3.

Rittel_and_Webber

Planning Problems are Wicked Problems

“A great many barriers keep us from perfecting such a planning/governing system. Theory is inadequate for decent forecasting, our intelligence is insufficient to our tasks, plurality of objectives held by pluralities of politics makes it impossible to pursue unitary aims, and so on. The difficulties attached to rationality are tenacious, and we have so far been unable to get untangled from their web. This is partly because the classical paradigm of science and engineering - the paradigm that has underlain modern professionalism - is not applicable to the problems of open societal systems.”

Gerald_Weinberg

English and Cobol

“Writing in English and writing in Cobol are similar activities, but not because Cobol is 'like English.' The secret key to all good writing is re-writing. It's true in English and it's true in Cobol. It's even true in APL. Nobody but a genius is capable of writing perfect prose on the first draft.”
  • Source: Entitled: Understanding the Professional Programmer. Written by: Gerald M. Weinberg. Published: 1988. ISBN: 0932633099. Medium: Book.

Measuring Performance

“One consequence of the size of a large project is that performance becomes more difficult to measure. Part of this difficulty stems from the scale of things, which makes it impossible for a single mind to be making the judgment of all the parts.”
  • Source: Chapter 6. Weinberg, G. M. (2011). The Psychology of Computer Programming (Silver anniversary edition) | 1971. Weinberg & Weinberg.