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Garch is (I think) math for brokers. It's good for anybody to know. But 
it's not a (human) foreign language, anyway (I suppose) no more or less 
foreign to Chinese than it is to USAese. And what about USA-born students 
who have already mastered such tools, who have graduated into professional 
life (academic or other)? Do they feel no need to learn other human 
languages? If not, disregarding US cultural arrogance, I guess it's a 
reasonable US calculation of opportunity cost (as optimistically estimated 
for a young US American's next 30 years in US universities or business): in 
comparison with gains from time spent otherwise, the gains from learning 
German, or Spanish, or Chinese are not worth it. Or have I got it basically 
wrong?  
 
John Womack  
 
 
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