Abstract
The paper tries to provide a concise summary of the main debates on exchange rate arrangements. It a simple taxonomy of exchange rate arrangements, fixed, flexible and managed, and a brief analysis of the main debates about their advantages and disadvantages. It emphasizes the different policy objectives of mainstream and heterodox schools of thought, suggesting that they tend to be more relevant than the specific defense of one particular exchange rate arrangement. In that sense, there are divergences on their preferences within schools of thought. The paper also discusses the causes of currency crises and the role of the dollar in the international monetary system.
