You seem like an intelligent person. I am, too. As a matter of fact, I held a general contractors license for a while. I have also been involved with concrete in the construction of several large bridges and a nuclear power plant, in NC.
While what you say has a measure of truth, in reality, IMHO, the whole thing could be completed within a year. You must not have waved any greenbacks in the face of a mexican laborer! You must underestimate the abilities READILY available here in this country. All it takes is a good leader... with a good imagination!
http://radio.weblogs.com/0105910/images/greatwall.jpg
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We are so screwed.
I live in San Diego, WE here live it first hand.
Theory is one thing, we live the reality
There is also a war going on 15 miles south.
Troops in the streets, killings, kidnappings, beheadings.
The drug cartels and the corrupt Mexican officals make the streets of Tijuana look like Bagdad 4 yrs ago.