Paul Krugman argues that the answer is clearly "no!" in his new editorial at the New York Times here. An excerpt:
"[. . .] In the spring of 2010, fiscal austerity became fashionable. I use the term advisedly: the sudden consensus among Very Serious People that everyone must balance budgets now now now wasn’t based on any kind of careful analysis. It was more like a fad, something everyone professed to believe because that was what the in-crowd was saying.
And it’s a fad that has been fading lately, as evidence has accumulated that the lessons of the past remain relevant, that trying to balance budgets in the face of high unemployment and falling inflation is still a really bad idea. Most notably, the confidence fairy has been exposed as a myth. There have been widespread claims that deficit-cutting actually reduces unemployment because it reassures consumers and businesses; but multiple studies of historical record, including one by the International Monetary Fund, have shown that this claim has no basis in reality.
No widespread fad ever passes, however, without leaving some fashion victims in its wake. In this case, the victims are the people of Britain, who have the misfortune to be ruled by a government that took office at the height of the austerity fad and won’t admit that it was wrong.
[. . .] But trendy fashion, almost by definition, isn’t sensible — and the British government seems determined to ignore the lessons of history.
Both the new British budget announced on Wednesday and the rhetoric that accompanied the announcement might have come straight from the desk of Andrew Mellon, the Treasury secretary who told President Herbert Hoover to fight the Depression by liquidating the farmers, liquidating the workers, and driving down wages. Or if you prefer more British precedents, it echoes the Snowden budget of 1931, which tried to restore confidence but ended up deepening the economic crisis.
[. . .] Why is the British government doing this? The real reason has a lot to do with ideology: the Tories are using the deficit as an excuse to downsize the welfare state. But the official rationale is that there is no alternative.
[. . .] Instead, it was all about the apocalypse looming if Britain failed to go down this route. Never mind that British debt as a percentage of national income is actually below its historical average; never mind that British interest rates stayed low even as the nation’s budget deficit soared, reflecting the belief of investors that the country can and will get its finances under control. Britain, declared Mr. Osborne, was on the “brink of bankruptcy.”
What happens now? Maybe Britain will get lucky, and something will come along to rescue the economy. But the best guess is that Britain in 2011 will look like Britain in 1931, or the United States in 1937, or Japan in 1997. That is, premature fiscal austerity will lead to a renewed economic slump. As always, those who refuse to learn from the past are doomed to repeat it. [. . .]"