Best 629 quotes in «theory quotes» category

When one theory is simpler than its competitor, this fact is relevant to saying what the world is like.

When someone admits one and rejects another which is equally in accordance with the appearances, it is clear that he has quitted all physical explanation and descended into myth.

When you have two competing theories that make exactly the same predictions, the simpler one is the better.

When the fact doesn't meet the theory then let go the theory.

Whether or not you can observe a thing depends upon the theory you use. It is the theory which decides what can be observed.

When that theory is isolated from known facts, it is likely not to be productive.

Where do we stand today compared to Greece circa 400 B.C.? Today's experiment-driven 'standard model' is not all that dissimilar to Democritus's speculative [sic] atomic theory.

While there I began to study the Asian religions as theories of mind.

Wikipedia only works in practice. In theory, it's a total disaster.

World-changing startups need to be premised on accurate contrarian theories.

You can get there from here, though there's no going home. Everywhere you go will be somewhere you've never been. "Theories of Time and Space

You cannot have a theory without principles. Principles is another name for prejudices.

You come to nature with all her theories, and she knocks them all flat.

You don't discard Newton. Newton becomes the limiting case of how you would apply Einstein's theories.

You know economists; they're the sort of people who see something works in practice and wonder if it would work in theory.

Without a theory the facts are silent.

You know very well that unless you're a scientist, it's much more important for a theory to be shapely, than for it to be true.

You know, people talk about [Richard] Nixon's "madman theory." We don't really know much about that. It was in memoirs, by somebody else.

You know what I'm intrigued by? Like, space and wormholes and Stephen Hawking's theories and Richard Dawkins's theories. That's what I care about.

You know what my theory is? Accept me or go to hell.

Wonderful theory, wrong species.

All things remarkable are surprisingly simple; albeit difficult to find.

Abstraction automatically gives rise to optimized solutions within the universal set of all possible solutions, as has been shown in this book. It is these optimized solutions that make up and drive the non-abstract parts of the world, while the non-optimized solutions remain ‘hidden’ from the material world, inside the abstract world. Starting from a basis of no postulation, we build our theory. As we go on piling up possibilities, we come to a similar basis for understanding the four non-contact forces of nature known till date. The difference in ranges of these forces is explained from this basis in this book. Zero postulation or abstraction as the basis of theory synthesis allows us to explore even imaginary and chaotic non-favoured solutions as possibilities. With no postulation as the fundamental basis, we are thus able to pile up postulated results or favoured results, but not the other way round. We keep describing such implications of abstraction in this book. We deal with the abstraction of observable parameters involved in a given system

Academics place much more importance on rigorous logic. There is also admiration in the profession for subtle reasoning. And mastery of the craft shows itself in the elegance of the intellectual super-structure…. The practitioner, on the other hand, uses economic theory only to the extent that he finds it useful in comprehending the problem at hand, so that practical courses of action will emerge which can be evaluated not merely in narrow economic cost-benefit terms, but by taking into account a wider range of considerations…. A practitioner is not judged by the rigour of his logic or by the elegance of his presentation. He is judged by results.

Admit only your victories until you have hooked their interest, then you draw them closer and admit the sort of failings that reflect well on a fellow, sentimental failings: that was the theory of courtship the young master had formulated...

… Fourier's great mathematical poem ... {Referring to Joseph Fourier's mathematical theory of the conduction of heat, one of the precursors to thermodynamics.}

His Theory of the Universe seems to have been, that it consisted solely of a multitude of objects which could be weighed, numbered, and measured; and the vocation to which he considered himself called was, to weigh, number and measure as many of those objects as his allotted three-score years and ten would permit. This conviction biased all his doings, alike his great scientific enterprises, and the petty details of his daily life.

Alas, the historical name is ‘actor-network-theory’, a name that is so awkward, so confusing, so meaningless that it deserves to be kept.

All scientific theories, even those in the physical sciences, are developed in a particular cultural context. Although the context may help to explain the persistence of a theory in the face of apparently falsifying evidence, the fact that a theory arises from a particular context is not sufficient to condemn it. Theories and paradigms must be accepted, modified or rejected on the basis of evidence.

And when were theories useless? I was a thinker, not a fighter, and the world was always in need of thoughts.

A third reason scientists are reluctant to examine paranormal phenomena is that they appear to contradict known physical laws. What is the point of studying the impossible? Only a fool would waste his time. The problem of data in conflict with existing theory cannot be overstated. Arthur Eddington once said you should never believe any experiment until it has been confirmed by theory, but this humorous view has a reality that cannot be discounted.

An enthusiastic philosopher, of whose name we are not informed, had constructed a very satisfactory theory on some subject or other, and was not a little proud of it. "But the facts, my dear fellow," said his friend, "the facts do not agree with your theory."—"Don't they?" replied the philosopher, shrugging his shoulders, "then, tant pis pour les faits;"—so much the worse for the facts!

Animals in pens have lots of time to develop theories", said the Cow, "I've heard more than one clever creature draw a connection between the rise of tiktokism and the erosion of traditional Animal labour. We weren't beasts of burden, but we were good reliable labourers. If we were made redundant in the workforce, it was only a matter of time before we'd be socially redundant too.

A philosopher's main task is to compulsively filibuster

As the saying goes, ‘he who has a hammer sees everything as a nail’. If you approach a problem from a particular theoretical point of view, you will end up asking only certain questions and answering them in particular ways. You might be lucky, and the problem you are facing might be a ‘nail’ for which your ‘hammer’ is the most appropriate tool. But, more often than not, you will need to have an array of tools available to you. You are bound to have your favourite theory. There is nothing wrong with using one or two more than others — we all do. But please don’t be a man (or a woman) with a hammer — still less someone unaware that there are other tools available. To extend the analogy, use a Swiss army knife instead, with different tools for different tasks.­

A theory is nothing but a tool to know the reality. If a theory contradicts reality, it must be discarded at the earliest.

A theory is like medicine (or government): often useless, sometimes necessary, always self-serving, and on occasion lethal. So it needs to be used with care, moderation and close adult supervision.

All good intellects have repeated, since Bacon’s time, that there can be no real knowledge but that which is based on observed facts. This is incontestable, in our present advanced stage; but, if we look back to the primitive stage of human knowledge, we shall see that it must have been otherwise then. If it is true that every theory must be based upon observed facts, it is equally true that facts cannot be observed without the guidance of some theory. Without such guidance, our facts would be desultory and fruitless; we could not retain them: for the most part we could not even perceive them.

Before an experiment can be performed, it must be planned—the question to nature must be formulated before being posed. Before the result of a measurement can be used, it must be interpreted—nature's answer must be understood properly. These two tasks are those of the theorist, who finds himself always more and more dependent on the tools of abstract mathematics. Of course, this does not mean that the experimenter does not also engage in theoretical deliberations. The foremost classical example of a major achievement produced by such a division of labor is the creation of spectrum analysis by the joint efforts of Robert Bunsen, the experimenter, and Gustav Kirchhoff, the theorist. Since then, spectrum analysis has been continually developing and bearing ever richer fruit.

Before yesterday I just thought on "IF", from there I build the theory "Everything is about IF", if you look deep enough you will find sense.

Chomsky's writings are 'classics' in Mark Twain's sense: something that everybody wants to have read and nobody wants to read.

Your candor is worth everything to your cause. It is refreshing to find a person with a new theory who frankly confesses that he finds difficulties, insurmountable, at least for the present.

Control Master Theory suggests that our psychological problems come about in much the same way: our decision to make ourselves unhappy because one or both of our parents were unhappy is just as altruistic as our friend's decision to run through flames to save his daughter.

Comics ... are sometimes four-legged and sometimes two-legged and sometimes fly and sometimes don't ... to employ a metaphor as mixed as the medium itself, defining comics entails cutting a Gordian-knotted enigma wrapped in a mystery ...

...definitely believe that, there's got to be a spark to a place...to make it feel like a home...

Crime brings together honest men and concentrates them.

Die Kunst des Rezensierens besteht nicht zuletzt darin, selbst über langweilige Bücher fesselnd zu schreiben.

Do not be afraid of the word 'theory'. Yes, it can sound dauntingly abstract at times, and in the hands of some writers can appear to have precious little to do with the actual, visual world around us. Good theory however, is an awesome thing. [...] But unless we actually use it, it borders on the metaphysical and might as well not be used at all.

Energetically speaking, antimatter is the mirror image of matter, so the two instantly cancel each other out if they come in contact. Keeping antimatter isolated from matter is a challenge, of course, because everything on earth is made of matter. The samples have to be stored without ever touching anything at all—even air.

Every person should embrace those [dogmas] that he, being the best judge of himself, feels will do most to strengthen in him love of justice.