Even a small change in the economic assumptions underpinning the surplus projections can make a big difference.
During that time, all these sites are engaged in full-scale battle to develop market share for when the economic recovery comes, the surplus dries up and wine prices start rising again.
It suggests that, even without an economic downturn, the many rosy surplus forecasts that frame today's debate in Washington are little more than entertaining fictions.
Although the former Republican presidential candidate would say he and former President Bill Clinton cut deals that led to a record budget surplus and the biggest economic boom in modern American history, many say the Georgia Republican's ideologically unyielding, take-no-prisoners brand of leadership ushered in an era of heel-digging politics that persists to this day.
In early October the Treasury released a pre-election economic and fiscal update indicating that after 14 years in surplus the budget balance was set to slip into deficit.
One only has to consider the UK case in the 1983-87 period, when the public finances moved into surplus whilst the economy enjoyed an extended period of above trend economic growth.
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To assess how Mr Brown is measuring up to his golden rule, economists have to adjust each year's deficit or surplus according to their reading of the economic cycle.
January of 2001, when that transition happened, CBO and every economic analyst out there said that the United States had a budget surplus, and that surpluses would continue as far as forecasters could foresee.
And the markets need to recognize that long-term creative arbitrage projects involving open or closed communities, tackling large economic challenges across the globe, are one of the few ways the surplus capital problem can be solved.
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France has been enjoying a favourable economic climate in the past year, with strong growth leading to a growing budget surplus.
Economic growth of 9% or more is not surplus to requirements, because the country's requirements are so stiff.
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Even so, his projections showed the current budget moving from deficit into surplus in 2009-10, allowing the rule to be met over the new economic cycle (see chart).
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Normally seen as a positive development, the surplus actually points to a huge slump in imports, rather than any bounce back in economic activity.
"Their economic policy, largely, was to take the proposals made during the campaign when there was a prospective very large surplus and those policies continued in place, irrespective of what was happening to the surplus ... it was wrong, " Greenspan said.
But I also voiced to President Obama Brazil's concern regarding the monetary expansion policies that ultimately mean that countries that have a surplus be able to strike a balance in those economic monetary expansion policies through fiscal policies that are ultimately based on expanding investments.
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