Near-zero interest rates tag the dollar as the flight currency of choice for world markets.

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Once, that might have led to fears of capital flight and a currency devaluation.

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It will be used to bolster foreign-exchange reserves depleted by a failed attempt to prevent devaluation of the Thai currency, the baht, and further threatened by the flight of short-term foreign money.

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When the Asian currency contagion started, there was initially a flight of funds from East Asia to India.

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Devaluation means inflation, capital flight (and who wants to hold a depreciating currency?), increased cost of capital, destroyed savings and a lower standard of living.

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The trick is writing software and algorithms that tackle industry-specific problems, such as flight scheduling that keeps pilots below flying limits and financial models that account for the cost of currency exchanges.

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Capital flight and surging imports have evidently contributed to the sharp drop in the external value of the local currency.

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Much of the recent weakness simply reverses the earlier safe-haven flight to dollars, a sign of investors' optimism about riskier assets rather than their fears about America's currency.

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Chavez imposed currency controls a decade ago trying to stem capital flight as his government expropriated large land parcels and dozens of businesses.

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