The article explores how different monetary policy approaches can help when interest rates are already low. By using a common economic model, the researchers found that sticking to a set inflation target can lead to lower inflation expectations, making the economy worse off. They suggest that aiming for slightly higher inflation during normal times can help keep inflation expectations stable and reduce the negative effects of low interest rates. Another strategy they propose is targeting the overall price level, which could also help stabilize inflation expectations and lessen the impact of low interest rates on the economy.