People reveal their real motives as soon as they have to provide information about where they are taking their money. That speaks for the USA, but not for China.
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Many people want to emigrate to the USA. The rush to China, on the other hand, is limited.
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Research institutions and think tanks regularly publish rankings on the competitiveness of nations. The methods are becoming more and more sophisticated. Usually there are dozens of indicators that are reduced to a single number using sophisticated procedures.
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