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One of the most important benefits of floating exchange rates is that they help to insulate the domestic economy against shocks. For example under fixed exchange rates, if an export market collapses, the adverse impact is transmitted fully to the domestic economy. It may be said that we achieve stability of the exchange rate at the cost of domestic instability.
However, if a similar thing happens under floating exchange rates, the automatic depreciation of the dollar helps to offset the negative domestic effects. In other words, we get relative domestic stability at the cost of exchange rate instability.
Furthermore, our domestic economic policy options are themselves significantly affected by whether exchange rates are fixed or floating.
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