Another former U.K. rate-setter and arch-dove, David Blanchflower, has pointed out that even if nominal-GDP targeting was a good idea in theory, it is a bad idea in practice because nominal GDP is hard to measure and prone to large revisions.
They may work in theory, but it is hard to tell if that will be good enough for markets, which want solutions quickly.
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Which is nice in theory, but it turns out this is not a remedy readily available to the FPC.
Now, this is all theory, and theory is all well and good, but making it happen in reality is not so easy.
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But capital is expensive for banks to raise - because it is the money that is (in theory) most in danger of being lost when times are hard.
Having Apple host your media in the cloud and being able to access it on any device is great in theory, but do you really want to be paying rent on music and movies that you have already paid for once?
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When it ceases to be so, the tax theory girding it is off base, in my opinion.
Keep in mind that a little inflation is good for the economy since, in theory, it helps keep consumers buying, while deflation tends to have them put off buying, waiting for lower prices in the future.
In theory, this is safe, because it is highly unlikely that all the bank's depositors will demand their money back at the same time.
Although genomes from two different individuals were used, it is possible, in theory, that young eggs could be harvested and stored from a mouse and later used with mature eggs from the same mouse, in order to produce offspring that are clones of the original.
In theory, the president is entitled to use it at taxpayers' expense only when he is on official business.
It is surely true, in theory anyway, that lawyers who argued on behalf of Gitmo detainees in the past can argue for more limited rights when working for the government.
That is fine in theory, but it presents a problem: If our current understanding of the laws of physics tells us that as much matter as anti-matter must have been created in the Big Bang, then where has all the anti-matter gone?
In thinking through the economic theory of liberal trade, it is helpful to draw a parallel with technological progress.
Theory is that in an entirely closed economy it will be capital, the shareholders, that pay all of it.
The Jarvik 2000 is much smaller, meaning in theory it can be left in permanently, provided it does not fail mechanically.
It is an idea that could in theory appeal to environmentalists, and it would demonstrate that Romney's criticisms of Solyndra aren't just political posturing.
Even if this theory were plausible, it is not true in Massachusetts today.
This is fine in theory, but in practice it often distorts the market for the remaining privately owned banks by keeping too many banks in business and by allowing nationalised banks with the benefit of a government guarantee to borrow more cheaply.
And it is those essential services with the added security in their lives that the thought is and the theory is that then they will become more connected to their local officials who are providing those services, and also indirectly more connected to a central government which is providing the funding for those essential services.
But Vivox is different because it is directly integrated into Facebook chat and in theory could be cross platform, said Rob Seaver, chief executive of the company.
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One theory is that it's a difficulty in emotional regulation.
As it always is when theory and empirical evidence point in the same direction.
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Already it is clear we cannot escape using quantum theory in all these concepts.
But in theory, customers overall would benefit if electricity could move to where it is most needed.
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That is the theory but it requires a shift in thinking.
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As happens every so often in asset protection planning, this theory has gone around so much that it is beginning to be accepted as gospel by some planners.
That is in theory a deductible business expense, but often it must be capitalized into the cost of the vines depending on how you legally structure your operation.
In theory, LIBOR is supposed to be a pretty honest number because it is assumed, for a start, that banks play by the rules and give truthful estimates.
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