There is now more uncertainty about a wide range of factors than six months ago.

ECONOMIST: Ports in a storm | The

He added that the changes to the forecasts were "all within the normal range of uncertainty".

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Both lengthening or shortening Treasury maturities and over or underweighting stocks subject you to the risk of underperformance, increase uncertainty and expand the range of potential outcomes.

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"It is a bigger range of uncertainty, " said Dr Otto.

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Tail winds might account for some of the off-target distance, NASA's Gavin Mendeck said, but the actual landing spot was well within the expected range of uncertainty, or the area where the rover could well have ended up.

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The wide range of the forecasts highlights the current level of uncertainty that Caterpillar faces in its key markets.

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Spurs were searching for a first Premier League this year and took the lead when Peter Crouch took advantage of some uncertainty in the Fulham defence to clip the ball home from close range in the 27th minute.

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The result of this uncertainty, according to many analysts, will be increased volatility within a relatively stable range.

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While nobody but the fast-money crowd enjoys a range-bound market, the fact that there is still a fair amount of uncertainty on any number of topics appears to be keeping the indices from straying too far in either direction at the present time.

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Senior decision makers across five Administrations, Republican and Democrat, have been unable to avoid the reality that, in a world of continuing globalization and growing political and military uncertainty, the U.S. needs a military that is large enough and has a sufficient range of capabilities to cover multiple major military contingencies in overlapping time frames.

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China, a modern-day economic powerhouse in a world of financial uncertainty, sees Cuba with its need for investment and political support as an important ally in its long-range plans to strengthen and expand its ties with the rest of Latin America, he adds.

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