The Japanese bond market has been very interesting in the last week proving yet again that private bond markets cannot set yields on government bonds if the government does want then too. Next time you hear some mainstream economist claiming a currency issuing government is running deficits at the will of the investors (read bond markets) politely tell them they are clueless. Japanese once again provides the real world Modern Monetary Theory (MMT) laboratory – every day it substantiates the underlying insights contained within MMT and refutes the core mainstream propositions. The financial media referred to the Bank of Japan as putting a whipsaw to the bond markets, which in context means that the BoJ is forcing the ‘markets’ into confusion (Source). The bond markets have misinterpreted recent Bank of Japan conduct in the JGB markets (less purchases than expected, and even missing a scheduled buy up) as a sign that the Bank was weakening on its QQE commitment from last September that it would hold the 10-year JGB yield to zero and thereby allow the longer investment rates to fall. Why they doubted that commitment is another matter but within a few days over the last week the Bank demonstrated that: (a) it remains committed to that target; and (b) it has all the financial clout it needs to enforce it; and (c) the bond market investors do not call the shots.