FT Alphavilleが、円の減価のためにどれだけ日銀がバランスシートを膨らませる必要があるかをざっと見積もったシティのNathan SheetsとRobert Sockinの報告を引用している: Extrapolating these results to Japan, which admittedly may or may not be appropriate, suggests that weakening the currency by 25 to 30 percent might ultimately require an expansion of the BoJ’s balance sheet by roughly five times more than was the case with QE1—or by over 50 percent of GDP. With th