Economic policymakers use various macroeconomic models, but how reliable are they in real-world conditions? Starting from the premise that all models are wrong, but some are useful, Matteo Iannizzotto introduces and explains the workings of the key economic models available for policymaking. He shows that the inconsistencies and contradictions evident in the real world require the economist to make choices about which models to adopt in certain circumstances and when not to rigidly adhere to a single approach. The book uses a clear and critical step by step analysis to consider the strengths and weaknesses of each model, in a way that enables students to develop their own critical engagement with macroeconomic policymaking. In so doing, the book provides an understanding of the world economy’s fluctuations since the global financial crisis that embraces the uncomfortable fact that inconsistency and the need for a multiplicity of models is central to macroeconomic policy choices. For the many students bewildered by the disconnect between the models in their textbooks and the policy choices so hotly debated in the press, the book will be essential reading.