We do not like Purchasing Power or Real Effective Exchange Rate (REER) as measurement for currencies. For us, the trade balance decides if a currency is overvalued. Only the trade balance can express productivity gains, while the REER assumes constant productivity in comparison to trade partners. Who has read Michael Pettis, knows that a rising trade surplus may also be caused by a higher savings rate while the trade partners decided to spend more. This is partially...
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