Theory
in sentence
2204 examples of Theory in a sentence
Economic
theory
suggests that, in principle, a BAT could push up the value of the dollar by as much as the tax, thereby nullifying its effects on the relative competitiveness of imports and exports.
The new left-wing governments had a better economic theory, one that could boost economic growth while creating opportunities at the bottom.
It can’t raise taxes, declare war, or sack a government (even though in
theory
it can dismiss all the members of the European Commission en masse, the so-called “nuclear option” that is unlikely ever to be used).
And the dollar has appreciated against most currencies, undercutting US exporters’ competitiveness, again in line with
theory.
A late convert to evolution, he was a lifelong skeptic about the
theory'
s political implications.
A professor of game theory, Varoufakis recently boasted to the New York Times that “little Greece, in order to survive, [could] bring down the financial world,” and that his media image “as an irrational fool… is doing my work for me” by frightening other EU finance ministers.
Apparently, Varoufakis believes that his “sophisticated grasp of game theory” gives Greece a crucial advantage in “the complicated dynamics” of the negotiations.
In theory, that should improve overall nutrition; but increased investment in agriculture is not a panacea.
Not everyone subscribed to this theory, but it was the West's strongest political force for several decades.
So it is no surprise that these advances are providing valuable insights into the field of evolutionary biology as well, including evidence supporting the nearly neutral
theory
of molecular evolution that I developed in 1973.
As it became possible to analyze an individual’s genetic makeup, it become apparent that there was much more variation within populations than prevailing evolutionary
theory
predicted.
One of the first attempts to square the
theory
with the evidence was proposed by my late colleague Motoo Kimura, who posited the existence of neutral mutations – gene variants that are neither advantageous nor harmful to an individual, and therefore not influenced by natural selection.
Kimura examined the rate of evolutionary change of proteins and proposed the neutral
theory
of molecular evolution in 1968.
His
theory
– which held that evolutionary changes at the molecular level are caused not by natural selection, but by random genetic drift – provided a good explanation for the genetic variation that researchers had discovered.
Kimura’s
theory
was simple and elegant, but the classification of mutations into the distinct classes – beneficial, neutral, or harmful – seemed too simple to me.
This insight was the basis of the nearly neutral
theory
of molecular evolution.
The explosion of data on genomes and population genetics in the twenty-first century has not only lent new support to my 42-year-old theory; it has also uncovered broad new areas of research.
One reason is that many modern financial flows do not play the useful role in capital allocation that economic
theory
assumes.
Even economists who find no evidence that capital-account liberalization boosts growth often feel obliged to stress that “further analysis” might at last reveal the benefits that free-market
theory
suggests must exist.
“It would have been difficult to predict that the investigations of Maxwell, Lorentz, and Einstein in electromagnetic
theory
would lead to improvements in communications,” he pointed out.
In theory, I accept the death penalty and even amputations, though in practice I believe that implementers of Sharia show little understanding for the reality that much crime stems from poverty and desperation.
It took 46 years from the discovery of superconductivity to the 1957 Bardeen, Cooper, and Schrieffer (BCS)
theory
of how the phenomenon occurs.
And, unlike BCS theory, in which the pairs are isotropic – with identical properties in all directions in space – the pairs in cuprates are strongly anisotropic, resembling a cloverleaf.
Whatever the
theory
turns out to be, it is certain to revolutionize physics.
The remaining options are said to fall into three groups: “grand scientific quandaries” (such as uniting gravity and electricity into one theory) which require a huge investment and first world infrastructure; “data collection,” which is the field work associated with archeological digs and biological/genetic surveys; and “science-informed problems,” such as combating AIDS or addressing global warming.
So, underpinning his
theory
of evolution is the literal interpretation of the Bible that dominated his era, combined with Aristotle’s vision of nature as definitively fixed.
Darwin’s
theory
is further used to support the belief that ancient humans – Neanderthal, Cro-Magnon, and Denisova – did not mix.
Today, Darwin’s
theory
of evolution is more a hindrance than a help, because it has become a quasi-theological creed that is preventing the benefits of improved research from being fully realized.
I was one of the rebel economists of the 1960s who rejected the macroeconomics we were taught in the 1950s – the “Keynesian”
theory
developed by J.R. Hicks, A.W. Phillips and James Tobin, according to which aggregate demand drove everything.
This bothered us, because the basic economic
theory
we were taught – the
theory
built by Alfred Marshall, Knut Wicksell, and Robert Solow – said everything was driven by structural forces.
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