The article discusses how newer 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 deal with 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. To make monetary policy more robust, using a mix of models and different approaches is recommended.