Fed Chair Janet Yellen spoke Friday on "The Federal Reserve's Monetary Policy Toolkit: Past, Present, and Future." She said, "The Global Financial Crisis and Great Recession posed daunting new challenges for central banks around the world and spurred innovations in the design, implementation, and communication of monetary policy. With the U.S. economy now nearing the Federal Reserve's statutory goals of maximum employment and price stability, this conference provides a timely opportunity to consider how the lessons we learned are likely to influence the conduct of monetary policy in the future.... Looking ahead, the FOMC expects moderate growth in real gross domestic product (GDP), additional strengthening in the labor market, and inflation rising to 2 percent over the next few years. Based on this economic outlook, the FOMC continues to anticipate that gradual increases in the federal funds rate will be appropriate over time to achieve and sustain employment and inflation near our statutory objectives. Indeed, in light of the continued solid performance of the labor market and our outlook for economic activity and inflation, I believe the case for an increase in the federal funds rate has strengthened in recent months. Of course, our decisions always depend on the degree to which incoming data continues to confirm the Committee's outlook. And, as ever, the economic outlook is uncertain, and so monetary policy is not on a preset course. Our ability to predict how the federal funds rate will evolve over time is quite limited because monetary policy will need to respond to whatever disturbances may buffet the economy. In addition, the level of short-term interest rates consistent with the dual mandate varies over time in response to shifts in underlying economic conditions that are often evident only in hindsight. For these reasons, the range of reasonably likely outcomes for the federal funds rate is quite widw.... The line in the center is the median path for the federal funds rate based on the FOMC's Summary of Economic Projections in June. The shaded region, which is based on the historical accuracy of private and government forecasters, shows a 70 percent probability that the federal funds rate will be between 0 and 3-1/4 percent at the end of next year and between 0 and 4-1/2 percent at the end of 2018. The reason for the wide range is that the economy is frequently buffeted by shocks and thus rarely evolves as predicted. When shocks occur and the economic outlook changes, monetary policy needs to adjust. What we do know, however, is that we want a policy toolkit that will allow us to respond to a wide range of possible conditions."