In theory there is no difference between theory and practice; in practice there is.
The theory of our modern technic shows that nothing is as practical as the theory.
The discourse on the Text should itself be nothing other than text, research, textual activity, since the Text is that social space which leaves no language safe, outside, nor any subject of the enunciation in position as judge, master, analyst, confessor, decoder. The theory of the Text can coincide only with a practice of writing.Roland Barthes
On Mondays, Wednesdays, and Fridays we use the wave theory; on Tuesdays, Thursdays, and Saturdays we think in streams of flying energy quanta or corpuscles.
Earthly providence is a travesty of justice on any other theory than that it is a preliminary stage, which is to be followed by rectifications. Either there must be a future, or consummate injustice sits upon the throne of the universe. This is the verdict of humanity in all the ages.randolph sinks foster
Scientific theory and its application to the growing needs of mankind advance hand in hand.cargill gilston knott
When it is useful to them, men can believe a theory of which they know nothing more than its name.vilfredo pareto
Never worry about theory as long as the machinery does what it's supposed to do.robert a. heinlein
Could it be, nevertheless, that Einstein 's theory is wrong? Might it be necessary to modify it to find a new theory of gravity that can explain both the stronger gravity and the apparent antigravity being observed today rather than simply throwing in invisible things to make the standard model work?john moffat
It left me there, the Compleat Young Girl, hell on wheels. I could build one-fifteenth of a log cabin, kill one-thirty-first of a tiger, kiss, do needlepoint, pass through an obstacle course, and come pretty close (in theory) to killing somebody with my bare hands. What did I have to worry about?alexei panshin
While in theory randomness is an intrinsic property, in practice, randomness is incomplete information .nassim nicholas taleb
The definition of random in terms of a physical operation is notoriously without effect on the mathematical operations of statistical theory because so far as these mathematical operations are concerned random is purely and simply an undefined term.
The second model is the functionalist model of mind. The organism through acquired S-R responses or through operations on the environmental manages to stay alive and adjust itself to the environment. The Thorndykian and Skinnerian approaches to learning and the adaptive model of the psychoanalytical theory come under this heading.
Claude Shannon, the founder of information theory, invented a way to measure 'the amount of information' in a message without defining the word 'information' itself, nor even addressing the question of the meaning of the message.
A theory has only the alternative of being right or wrong. A model has a third possibility: it may be right, but irrelevant.
Direct application of the theory of games to the solution of real problems has been rare, and its chief uses have been to offer some insight and understanding into the problems of competition (without actually solving them), and to provide mathematicians with new fields to conquer. Many important real problems involve more than two opponents, are not zero-sum, and exceed the bounds of the most developed versions of game theory.
Morality is the theory that every human act must be either right or wrong, and that 99% of them are wrong.
General systems theory is the scientific exploration of "wholes" and "wholeness" which, not so long ago, were considered metaphysical notions transcending the boundaries of science. Hierarchic structure, stability, teleology , differentiation, approach to and maintenance of steady states, goal-directedness these are a few of such general system properties.
A modern theory of knowledge which takes account of the relational as distinct from the merely relative character of all historical knowledge must start with the assumption that there are spheres of thought in which it is impossible to conceive of absolute truth existing independently of the values and position of the subject and unrelated to the social context.
How such an elaborate theory could have become so widely accepted – on the basis of no systematic evidence or critical experiments, and in the face of chronic failures of therapeutic intervention in all of the major classes of mental illness... – is something that sociologists of science and popular culture have yet to fully explain.
A more viable model, one much more faithful to the kind of system that society is more and more recognized to be, is in process of developing out of, or is in keeping with, the modern systems perspective (which we use loosely here to refer to general systems research, cybernetics, information and communication theory, and related fields). Society, or the sociocultural system, is not, then, principally an equilibrium system or a homeostatic system, but what we shall simply refer to as a complex adaptive system.
A theory that advocates the abolition of all forms of government as a necessary step towards achieving political and social liberty.
Today, almost half a century after the publication of the Encyclical, fresh knowledge has led to the recognition that evolution is more than a hypothesis. It is indeed remarkable that this theory has been progressively accepted by researchers, following a series of discoveries in various fields of knowledge … [however,] theories of evolution which, in accordance with the philosophies inspiring them, consider the mind as emerging from the forces of living matter, or as a mere epiphenomenon of this matter, are incompatible with the truth about man. Nor are they able to ground the dignity of the person.
I pass with relief from the tossing sea of Cause and theory to the firm ground of Result and Fact.winston churchill
[General System theory]... is a logico-mathematical field, the subject matter of which is the formulation and derivation of those principles which hold for systems in general.