"The evidence is that the wealth effect is much more modest than most people would like to believe," said William Grimes, a professor at Boston University.
If fixing Japan's economy sounds a bit like a Rube Goldberg contraption, where everything has to be set up just right for the ball to wind its way toward its final destination, it probably is.
"This is sort of a social experiment," said Masamichi Adachi, an economist with J.P. Morgan in Tokyo. "If people believe tomorrow will be better than today, then they may start borrowing and spending. If people spend, then corporations will pay higher wages."
But he adds that, "Many people like myself feel this is still uncertain. Also this is a little dangerous to continue this policy because if people don't follow it then asset prices will collapse."
As the yen's value has declined following Abe's election, the surging cost of natural gas and crude oil imports to replace nuclear power generation suspended after the tsunami disaster in March 2011, has tipped Japan's trade balance into the red. For now, the country's current account remains robustly positive and most of Japan's massive mountain of public debt is owned by domestic investors. But if the deficits were to persist for too long, Japan could come to rely on foreign buyers to support its public debt, Adachi said.
"That would be the time many people would require risk premiums and that means interest rates would spike up," he said. "In the short term, it's under control."
In any case, Japan will need plenty of luck, including a stable world recovery, to succeed now where it has failed in the past, and in managing its fiscal balancing act.
Abe says he is determined to push ahead with various reforms to make Japan's economy more modern and competitive. One of the biggest initiatives is Japan's commitment, announced last month, to join the Trans-Pacific Partnership, an Asia-Pacific-wide trading bloc meant to open markets wider to trade among its dozen or so members, which range from Chile and tiny Brunei to the U.S. and, if all goes well, Japan.