With an national election approaching in Japan (February 8, 2026), there has been a lot of discussion about the so-called ‘weak yen’ and whether the Bank of Japan should be intervening to manage the value of the currency on international markets. PM Takaichi has been quoted as saying that the weak yen is good for Japanese exports and has offset some of the negative impacts on key sectors in Japan, including the automobile industry. She also said that the government would aim to encourage an economic structure that could withstand shifts in the currency’s value, largely by encouraging domestic investment. The yen depreciation is another example of the way mainstream economists distort the debate. They argue that the Bank of Japan should be increasing interest rates further to shore up the yen. Previously, they pressured the government into creating a pension fund investment vehicle to speculate in financial markets to ensure the basic pension system doesn’t run out of money. These two things are linked but not in ways that the mainstream public debate construes. It turns out that pension myths, are directly responsible for the evolution of the yen. This blog post explains why.