Policy makers have changed their focus from keeping inflation from getting too high to keeping inflation from getting too low because ? deflation undermines the financial health of firms, it can quickly turn into a financial crisis that brings the economy to a standstill. ? the central bank's ability to stimulate the economy by raising interest rates is compromised. ? the central bank's ability to stimulate the economy by lowering interest rates is OK compromised. ? technology has changed the structural economy so much that asset inflation is no longer a nces concern