The article discusses how new economic models with added financial sector details show more uncertainty than older models. These models suggest that monetary policy has a bigger impact, but a simpler policy rule is needed to account for this uncertainty. Leaning-against-the-wind policies may not be very effective in the Euro Area. Including financial frictions in models can improve forecasting if the right data is used. In the future, using a mix of models and different approaches could lead to better monetary policy decisions.