Theory
in sentence
2204 examples of Theory in a sentence
And game
theory
explains why we act even more irresponsibly when making group decisions (owing to the so-called common pool problem).
One Hundred Years of RelativitySTOCKHOLM – This year marks the centenary of Albert Einstein's general
theory
of relativity, his masterwork describing gravity as the curvature of space and time.
Finding solutions that fulfill Einstein's equations – space-times that describe the curvature of our universe – is difficult, so his
theory
was slow to catch on.
Einstein's
theory
not only describes our universe, from the Big Bang to black holes; it has also taught physicists the relevance of geometry and symmetry – lessons that spread from particle physics to crystallography.
But, despite the similarities that Einstein's
theory
has with other theories in physics, it stands apart by its refusal to fit together with quantum mechanics, the
theory
that explains the dominant behavior of matter at the atomic and subatomic scale.
According to Einstein's theory, gravity, unlike all other physical forces known to man, is not quantized.
Clearly, there is something about the combination of quantum
theory
and gravity that remains unknown, and our understanding of space, time, and matter hinges on unraveling this connection.
But, despite the enormous potential impact of such a breakthrough and the efforts of generations of physicists to achieve it, we still do not know which
theory
is the right one.
Gravity's weakness makes it very difficult to measure its quantum effects; as a result, we have no experimental data to guide theoretical physicists in the development of the missing
theory.
These experiments are so detached from our technological capabilities that physicists have focused on trying to remove the mathematical contradictions first, developing approaches like string theory, loop quantum gravity, and asymptotically safe gravity.
But to know which
theory
describes physical reality, experimental tests must eventually be developed.
And, though researchers may not have found results supporting any one theory, they have advanced the cause of science by better defining the observational criteria any quantum
theory
of gravity will have to take into account.
As we commemorate Einstein's achievement, we should also seize the opportunity to celebrate the unrelenting spirit of those who are pushing ahead and trying to answer the questions his
theory
left us.
General Relativity has brought us wormholes, evaporating black holes, and the Big Bang theory; it underlies the discovery that the universe is expanding and that so-called exoplanets are much more common than anybody thought; and it has utterly redefined the way we think of our own place in the universe, ultimately even calling into question whether this universe is the only one.
He even suggests that established financial
theory
is obsolete.
That
theory
sounds as general and fundamental as the
theory
that global warming is melting glaciers and raising sea levels around the world.
What is this
theory
anyway?
Yet another
theory
is that changes in our ways of handling risk have reduced risk premia.
But this is really a
theory
about risk management for certain kinds of products, not “liquidity” per se .
Hyun Song Shin of Princeton University proposed a
theory
of excess liquidity in a paper with Tobias Adrian that he presented last month at the Bank for International Settlements in Brunnen, Switzerland.
Ever since the 1986 Single European Act removed restrictions on working in other member countries, the continent has been a single labor market – at least in
theory.
This is another
theory
that cannot be tested or verified and, in any case, the logic behind it is muddled.
This
theory
is also dangerous for the stability of the euro.
The best answer, both in
theory
and practice, is to find ways to hold governments accountable to the people that they serve.
Attempting to use game
theory
to interpret the various calls for coordination is revealing, though not in the way that game theorists assume.
The first was the Keynesian
theory
of deficient demand, which holds that workers become unemployed “involuntarily” when their community lacks the money to buy the goods and services they produce.
While the specifics vary across countries, the innovation-focused Neo-Schumpeterian growth theory, proposed by the economists Philippe Aghion and Peter Howitt, offers some important insights.
In statistics and the
theory
of decision-making under uncertainty, errors are inevitable.
Based on new
theory
and experience, we may eventually conclude that policy responses to systemic risk are impossible to devise, and that the costs of the AWF errors are higher than the RWT errors.
But while Trump ran as a populist, he has governed as a plutocrat, most recently by endorsing the discredited supply-side
theory
of taxation that most Republicans still cling to.
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