[Bank of Japan Governor Kazuo Ueda: If there is a serious shock in the future, QE tools may have to be used] On November 7, Bank of Japan Governor Kazuo Ueda said that although unconventional measures are not as effective as traditional interest rate cuts, if there is a major shock in the future, the Bank of Japan may use these tools again. "Looking back at the impact of unconventional monetary policy tools on the economy and inflation, I would say that they did have some positive effects," Ueda said in response to a question after speaking at the International Monetary Fund in Washington on Friday. But when interest rates are in positive territory, he said, "as many people have said, they don't "Depending on the severity of the impact, we may have to use these tools again," he said. "But if we need to use these tools again, we should consider how to minimize their negative effects - negative side effects - which may include the impact on market operations."