Haven't you heard? Neo-classical economics died when Herbert Hoover left office and Keynesian economics is on its deathbed. All hail MMT! :lol: Japan is the guinea pig for this line of thinking, and so far I'm not impressed. Now we seem to be joining the club. I mean, my stocks are going back up--for the moment, but, yeah, I agree that some day all of this debt is just going to come crashing down on our heads. When that happens is anyone's guess.
A short rundown of the Japanese version of Modern Monetary Theory: Run up huge fiscal deficits building infrastructure and paying pensions to old folks until your national debt exceeds 2.5 times your GDP. Don't worry about the debt, because your Ministry of Finance can just float bonds and sell all of them, if necessary, to the Bank of Japan. The Bank of Japan can then swap the bonds for dollars or issue yen to trade with other central banks for the foreign currency it needs and still have a currency thought by foreign traders/investors to be a "safe haven." Japanese banks dealing with negative interest rates can swap yen for dollars by discounting them and then investing in dollar-denominated assets, AT LEAST until the Federal Reserve pulls the rug out from under them and lowers its Fed funds rate to zero. European and Japanese banks could make money on yen/dollar or euro/dollar interest rate spreads, but that will prove problematic in an environment where a 10-year Treasury pays 0.80% interest. One would think it's more difficult for foreign banks to do much discounting to entice American banks to engage in swaps agreements in such an environment, but then what do I know? I'm not a banker.
In the meantime, the remedy? Possibly even more debt:
I don't see this ending well in the long run. It could, I suppose, go on for many more years, as it has already, with the Japanese economy limping along under the burden of massive public debt. But I wouldn't be a big purchaser of yen at this point. And if foreigners decide to stop buying yen the drop could be steep and swift. Central banks that have tried to manipulate the value of their currencies in the FOREX markets generally haven't succeeded for long, but only time will tell if this time it's different.