Japan as an example of Keynesian fiscal stimulus

From The New York Times:

Japan’s rural areas have been paved over and filled in with roads, dams and other big infrastructure projects, the legacy of trillions of dollars spent to lift the economy from a severe downturn caused by the bursting of a real estate bubble in the late 1980s. During those nearly two decades, Japan accumulated the largest public debt in the developed world — totaling 180 percent of its $5.5 trillion economy — while failing to generate a convincing recovery.

Now, as the Obama administration embarks on a similar path, proposing to spend more than $820 billion to stimulate the sagging American economy, many economists are taking a fresh look at Japan’s troubled experience. ...

It matters what gets built: Japan spent too much on increasingly wasteful roads and bridges, and not enough in areas like education and social services, which studies show deliver more bang for the buck than infrastructure spending.

“It is not enough just to hire workers to dig holes and then fill them in again,” said Toshihiro Ihori, an economics professor at the University of Tokyo. “One lesson from Japan is that public works get the best results when they create something useful for the future.” ...

In the end, say economists, it was not public works but an expensive cleanup of the debt-ridden banking system, combined with growing exports to China and the United States, that brought a close to Japan’s Lost Decade. This has led many to conclude that spending did little more than sink Japan deeply into debt, leaving an enormous tax burden for future generations.

In the United States, it has also led to calls in Congress, particularly by Republicans, not to repeat the errors of Japan’s failed economic stimulus. ...

Economists tend to divide into two camps on the question of Japan’s infrastructure spending: those, many of them Americans like Mr. Geithner, who think it did not go far enough; and those, many of them Japanese, who think it was a colossal waste. ...

Most Japanese economists have tended to take a bleaker view of their nation’s track record, saying that Japan spent more than enough money, but wasted too much of it on roads to nowhere and other unneeded projects.