Essentially, what the precautionary-saving literature says is that more uncertainty reduces the average propensity to consume (APC), the ratio of consumption to income.

从本质上讲，预防性储蓄理论说的是，更多的不确定性会降低平均消费倾向(APC)，即比消费与收入的比率。

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However, while the average global fertility has dropped from about 5 to 2.6 births per woman during the past 50 years, considerable uncertainty exists about the future.

然而，虽然过去50年中，全球平均出生率从每个妇女生5个孩子下降到2.6个，未来仍具有巨大的不确定性。

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There are enough uncertainties in today's world, without adding uncertainty about the average rate of inflation to the list.

今天的世界存在足够多的不确定，不要再把平均通胀率的不确定性加入其中了。

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Their research (available at policyuncertainty.com) shows that, on average, U.S. economic policy uncertainty has been 50% higher in the past two years than it has been since 1985.

WSJ: Bill McNabb: Uncertainty Is the Enemy of Recovery

While the average consumer does indeed have myriad questions about this topic, uncertainty is heightened among those using No Pre-Set Spending Limit (NPSL) credit cards.

FORBES: The Pitfalls of No Pre-Set Spending Limit Credit Cards

This has created a global system that is deeply distorted, where those holding financial assets like stocks and bonds have been rewarded, but where the average American, for example, lives in a world of labor uncertainty and recession-level unemployment rates.

FORBES: Billionaire Paul Singer: The U.S. Has A Big Debt Problem And The Fed Is Making It Worse