A tríade precisa de ler isto para aprender

"In several European countries that now confront fiscal and growth challenges, the pattern was somewhat different: most of the excess consumption and employment was on the government side. But the effect was similar: an unsustainable pattern of income and employment generation, and lower productivity and competitiveness in these economies’ tradable sectors, leading to trade deficits, stunted GDP, and weak job creation.
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One could argue that the euro has been and still is overvalued, and that this has hindered many eurozone economies’ productivity relative to non-eurozone countries. But the relative productivity deficiencies within the eurozone are more important for growth, and have nothing to do with the exchange rate.
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The focus on currencies as a cause of the West’s economic woes, while not entirely misplaced, has been excessive. Developing countries have learned over time that real income growth and employment expansion are driven by productivity gains, not exchange-rate movements." (Moi ici: A tríade precisa de ler isto)

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"The Exchange-Rate Delusion"