According to the required reading on Japan (entitled "The Bank of Japan's Monetary Policy Lacks a Strong Driving Force for Building Inflation

·     According to the required reading on Japan (entitled "The Bank of Japan's Monetary Policy Lacks a Strong Driving Force for Building Inflation Expectations"), there are three main reasons why it is necessary to achieve a moderate inflation rate (of 2%) in order to eventually revive Japan's economy. What are these three reasons?