It allows us to get a reading on the level of buying or selling interest and can help to determine whether supply or demand is dominating a market.
The statement from GFMS did not say whether the projected increase in gold jewelry demand will remain regionalized or whether the tough conditions in the US, EU and the Middle East will continue for 2011.
Catalunia has a snap election coming up in which the major real question is whether to demand more, or even possibly total, independence from Madrid.
Agreeing that more asset purchases may lower interest rates, there was a question mark surrounding whether it boosted overall consumer demand or not.
It matters, therefore, whether this is a short-term blip - due to labour-hoarding by employers, for example, coupled with a shortage of demand - or whether something more fundamental has been happening to the "supply side" of our economy, which is systematically preventing us from growing out of the crisis as quickly as we had hoped.
Whether through gold bars or bracelets, gold demand from Chinese households has risen since Jan. 2000 at a compound average growth rate of 8.9% year-on-year.
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This chart reported by the folks over at the Volokh Conspiracy illustrates the difficulty of determining whether lawsuits, regulators, manufacturers or consumer demand reduce liability.
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What remains to be seen is whether or not there is in fact a demand for mobile payments -- the technology has yet to take off in the US, despite an influx of funding and infrastructure from MasterCard and Google.
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While not wishing to pre-judge the outcome of the six month review, Mr Coaker added that he felt the British public was ready to look at ways of curbing demand decisively, whether through legislation or other means.
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It remains to be seen whether the rules will satisfy the demand for reform or will trigger more change.
But you could ask whether there are policies which would let us hedge our bets - which would help the economy, regardless of whether the big problems are related to supply, or demand.
Perhaps the best way to determine China's impact on world inflation is to gauge whether its net impact is to increase aggregate global demand or supply.
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To Krumholz, this is part of a larger tapestry of unexpected clinical trial results that should make doctors, patients and regulators demand more hard information about whether drugs reduce symptoms or prevent problems like heart attacks and deaths.
The combination of Disney's fantastic movies and Sky's award-winning innovation means that customers will have the chance to enjoy the very best of Disney on their own terms, whether that's watching on demand, on the move or in 3D.
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Today, we expect and demand such services whether we are on a mountain top or in the middle of an ocean.
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If it wasn't tragic it might be comic, that there is so little consensus among politicians, bankers and economists about whether the weakness in the economy stems more from inadequate supply or weak demand.
Even the most hawkish participants in the FDIC symposium accepted that it was, even now, impossible to be sure whether the farm boom was justified by shifts in supply and demand or a bubble pumped up by irrational exuberance.
But on the big question of whether or not the Palestinians are going to be in a position to demand from themselves that they meet the requirements of ending violence so that something can happen in terms of a future negotiation, this was a very important step today.
Indeed, much of the demand for ratings comes from investors who want to know whether this or that debt issue is attractively priced.
"Although 95 years have passed since the world's most famous luxury liner sank in the North Atlantic Ocean, there continues to be an endless demand for information regarding Titanic - whether it be facts, legends or myths, " he said.
Whether this is a tipping point, or the result of a slow build in consumer demand is a matter of perspective.
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If bank lending is turning down, for example, anecdotal information is needed to help sort out whether the primary cause is reluctance to lend, a reduction in loan demand, or some combination of the two.
Whether it's The Bourne Legacy on demand, Despicable Me in 3D, or Ted on the go, Sky Movies customers will enjoy the biggest and best selection of movies on their terms - and at least a year ahead of any other subscription service.
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Lord Forsyth interjected to demand an answer on whether the government would push ahead with the bill, or halt its progress, in the absence of one.
First, the premium for skilled workers has been falling: a surge in secondary education has increased the supply of literate, reasonably well-schooled workers, and years of steady growth have raised relative demand for the less skilled in the formal workforce, whether as construction workers or cleaners.
Despite a reinstitution of 100% depreciation for capital equipment, much of that demand was pulled into 2011, as the business community was uncertain as to whether or not the tax break was going to be reinstated in 2012.
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Whether or not improving relations with Russia is a good idea is purely a question of what the Russians demand and what the Georgians would get in return.
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As broadband Internet access becomes widely available over the next 18 months, difficult decisions must be taken about whether it is right or practical to try to extend regulations designed for conventional television channels to on-demand content aggregated on new portals.
Whether for everyday use as a primary power source, for use during periods of peak grid demand, or for backup use during emergencies, fuel cells offer an attractive, efficient and eco-friendly solution.
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