Fifty years ago, in March 1973, the major industrial economies abandoned fixed exchange rates, conclusively ending the post–World War II Bretton Woods arrangements. Proponents believed their action would strengthen countries' ability to reconcile domestic macroeconomic policies with the balance of payments. But opponents feared it would initiate a new era of instability and financial shocks. Since 1973, much of the world has moved away from fixed exchange rates to a variety of regimes based on considerable exchange rate flexibility. But international trade conflicts and unstable capital flows, along with a rise in financial crises around the world, have nonetheless accompanied the global shift away from exchange rate pegs. How has the international monetary system performed over the past half century? What have we learned from the experience of more flexible exchange rates? What has been the impact on macroeconomic and financial stability in the years since? This book derives from papers delivered at a conference that brought together leading economists and policymakers to debate and discuss these questions, as well as to assess the evolution of the international monetary system, the dominance of the US dollar, and the role of exchange rate regimes in shaping the world economy.

Fifty years ago, Harry G. Johnson published “The Case for Flexible Exchange Rates, 1969,” its title echoing Milton Friedman’s classic essay of the early 1950s. Though somewhat forgotten today, Johnson’s reprise was an important element in the late 1960s debate over the future of the international monetary system. The present paper has three objectives. The first is to lay out the historical context in which Johnson’s “Case” was written and read. The second is to examine Johnson’s main points and see how they stand up to nearly five decades of experience with floating exchange rates since the end of the Bretton Woods system. The third is to review the most recent academic critiques of exchange-rate flexibility and ask how fatal they are to Johnson’s basic argument. I conclude that the essential case for exchange rate flexibility still stands strong.

Analyzes developments in the international monetary system since 1973, with anew added epilogue.