The lesson for Asia is; if you have a central bank, have a...

The lesson for Asia is; if you have a central bank, have a floating exchange rate; if you want to have a fixed exchange rate, abolish your central bank and adopt a currency board instead. Either extreme; a fixed exchange rate through a currency board, but no central bank, or a central bank plus truly floating exchange rates; either of those is a tenable arrangement. But a pegged exchange rate with a central bank is a recipe for trouble.