That's why many economists embrace intelligent infrastructure spending on roads, bridges, schools, electric grids and rural Internet access as effective stimulus elements.
This is a much more effective stimulus than extending the Bush tax cuts for higher-income earners without figuring out how to pay for it.
This, despite the fact that economists from all political ideologies concluded that extending the length of time that workers can collect unemployment insurance benefits would be one of the most effective stimulus measures.
He said that people would have to be confident that rates would stay very low even if there was a small rise in inflation above the target level, because otherwise, low rates would be a less effective stimulus to the economy.
But he deserves credit for having administered a limited and effective fiscal stimulus, and for promoting investment through corporate tax cuts.
That is widely considered one of the most effective forms of stimulus because people out of work tend to spend nearly all the money they get.
In contrast, the tax provisions that were effective under the Obama stimulus plan would be allowed to expire.
And today's dilemmas are prompting new research: which form of fiscal stimulus is most effective?
That puts more families at risk of falling into homelessness and poverty, and it means that one of the most effective forms of local economic stimulus isn't being used.
Though there is little to indicate that households behave in this way in general, there is evidence that when governments are heavily in debt fiscal stimulus becomes less effective, and investors' and consumers' confidence can deteriorate suddenly.
Unfortunately, there is no assurance that a new round of fiscal stimulus would be effective, there is little appetite among legislators for a big new package, and the likelihood of pushing one through the new, divided Congress is doubtful.
The 50% bonus depreciation provision was put in the tax code as a business gimme in the 2007 stimulus package, effective Jan. 1, 2008 through Dec. 31, 2012 (a repeat of a temporary break Congress used back in 2002).
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But, in older animals - and, it is believed, humans - the amino acid stimulus prompting synthesis is less effective, and the process slows down.
That in turn has pushed sterling down, a stimulus all the more welcome since monetary policy is less effective than usual because banks are reluctant to lend.
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In a less orthodox stimulus measure, the government said over the weekend that effective Monday, it would expand a program to subsidize home applicance purchases by farmers to 10 more provinces, from an initial four.
If stimulus is the goal, it would be orders of magnitude more effective to reverse the tax cuts and temporarily increase spending for targeted job creation, unemployment insurance, infrastructure or aid to state and local governments.
Last week, the Dow suffered its first weekly stumble in four weeks amid concerns about the Fed withdrawing its stimulus, and whether similar efforts by the Bank of Japan would be effective.
That is speculation, but the fact is that the stimulus programmes in the big emerging markets have been, mostly, large and effective.
Tuesday's burst higher by the Dow comes after a week that saw the blue-chip measure pull back for its first time in five weeks, amid concerns about whether stimulus from the Federal Reserve would continue, and whether similar efforts by the Bank of Japan would be effective.
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