Mr Colley described market conditions in the UK as "extremely challenging" and difficult to predict.
Aside from adding an ugly dimension to the charred economic landscape, its effects would also be widespread and difficult to predict.
Weather is inherently uncontrollable and difficult to predict, notes Dirnagl, but it is part and parcel of operating in the air emergency transport business.
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We expect the immediate impact of usage-based pricing on ARPU will be mixed and difficult to predict due to the limited roll-out, but over time it will act as an incentive for people to upgrade to Turbo, Extreme and Wideband data services.
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That sort of development and transformation is difficult to predict, and largely irrelevant from an investing point of view.
Of course, the prices of oil and other commodities are very difficult to predict, and they remain a source of considerable uncertainty in the inflation outlook.
House of Fraser chairman Don McCarthy said that 2012 had been "challenging" for retailers, and it remained "difficult to predict" when the economy and consumer confidence would improve.
Most of the schemes he presented in the Budget were not expected to come into force for some time, and their impact was inherently difficult to predict.
Sightings are notoriously difficult to predict and cannot be guaranteed, but if you want to chase the elusive lights, right now is the best time to head up north.
"It's very difficult to predict where and when these landslips are going to happen, " he said.
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As well as their path, their forward motion, intensity and wind speed are all very difficult to predict, NOAA notes.
Local and regional weather patterns are more difficult to predict, as anyone who has relied on a five-day weather forecast can understand.
Patent cases are difficult to predict, and as the trial winds to a close, the betting is all over the map as to who will win.
Exactly when and how quickly pricing will improve is difficult to predict.
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Analysts and industry executives say it's difficult to predict how many of the maturing commercial property loans will wind up in default because they can't secure a new mortgage.
Given the severity and rarity of homozygous FH it is difficult to predict how the committee will vote, but the safety concerns raised by the FDA make it extremely unlikely the drug could receive an expanded indication for heterozygous FH anytime in the near future.
"Qom is very close to Tehran and this is a major event, " she said, adding that it is difficult to predict what would happen.
However, Geithner said uncertainty over the fiscal cliff negotiations and possible changes to the deficit situation made it difficult to predict precisely how long the government's steps to ease the situation would last.
However, the luxury goods company cautions that the rising Swiss franc and uncertain economic conditions make the remainder of the year difficult to predict.
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Only by understanding the subtle genetic variations among hundreds of thousands of people--by sifting out the molecular misnomers that predispose someone to a particular malady--will scientists learn how to better predict, diagnose and ultimately cure difficult diseases like diabetes, schizophrenia and heart failure.
It may be difficult to predict how successful your idea will be and, if it is, how long that success will last.
It's difficult to predict what will transpire in the days and weeks ahead, but most agree that Suu Kyi's release is not likely to spur change right away.
That is why it is difficult to predict the outcome of these elections, and why when you talk to people in the streets, or go out in restaurants, or interview analysts, you will hear as many scenarios as there are people ready to talk.
Only by understanding the subtle genetic variations in hundreds of thousands of people--by sifting out the molecular misnomers that predispose someone to a specific malady--will scientists learn how to better predict, diagnose and ultimately cure such difficult diseases as diabetes, schizophrenia and heart failure.
It is always difficult to predict what the Supreme Court will do, and almost everyone agrees this is a close case. (The two federal courts to hear it so far have split, with Clinton winning at the trial level and Jones on appeal.) But there are good reasons to believe that the court may be reluctant to allow Jones' suit to go forward.
Trying to predict this race is very difficult - you might as well close your eyes and stick a pin on any one of Melandri, Capirossi, Rossi, Hayden or Pedrosa.
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Though it's difficult to predict exactly how the year will pan out, weak job growth, a slowing economy and troubled housing markets all point to signs of an economic recession.
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