The key is education. As more and more people get educated, they get better equipped for non-manual labor jobs and those jobs can be sent elsewhere. Think about it: how many people in this country have jobs where they actually make something with their hands. I know, you think a lot, but think about it relative to 60 years ago. We're a service economy now. It is possible to ship jobs out of the country and still be prosperous.

Alex

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1983 300D (parked for four years)
2012 VW Sportwagen TDI Manual
2001 Miata SE
1962 Chevrolet Corvair Rampside