He also says that many governments are having rapidly rising debt to GDP ratios. And now Japan is the only country with a two to one ratio--all of its citizen's investment is funding public debt. Other nations are likely to hit these ratios.
However, as interest this is scary, twenty percent of a nation's GDP to paying interest in the public debt. However a one to one or two-to-one share economy. this number goes down to one or two percent.