Explaining why the Japanese Government Bond rates are the lowest in the world, and given this, why I am concerned about our increasing government debts causing interest rates to escalate in both our government and private sectors is an interesting study.
Guess the easiest explanation involves the differences between Japan and the U.S, For starters, the Japanese are extremely nationalistic and homogeneous as compared to us. This adds up to Japanese citizens owning almost all of their own public debts even at rates barely above 1%, By contrast 45% of our federal debt is held by foreigners looking for less risk at a fairly high return. In addition the Japanese and their politicians accept GDP growth rates which would be unacceptable in the U.S. public square as can be seen for a couple of decades.
Jamie, admittedly I am focusing on fiscal policy and ignoring your point that the Federal Reserve and Central Bank through monetary policies can avert a problem created by our growing federal debt. My fear is the federal debt and failures of a fiscal debt responsibility is reaching a point where even sound monetary policies cannot save the day.