A report that the McKinsey Global Institute published on Thursday analyzed the impact of automation and the clustering of skilled workers in geographic hubs.
There are other ways to reduce the dependency ratio, such as encouraging immigration of skilled workers and improving child-care provision to encourage more women to work.
And because there were fewer restrictions there than in the city itself, plenty of newcomers settled there from abroad bringing their skills as workers, merchants, or money lenders during the next few hundred years.
If educated Sri Lankans were allowed to work in India, they could get good jobs there instead of having to take menial work in the Gulf, thus easing a growing shortage of skilled Indian workers.
British workers had them. Many had spent years in British factories. Pay was poor in Britain, and these skilled workers could get much more money in America.
Loudoun County is a part of northern Virginia that has changed due to the growth of the high-tech industry and a rise in the number of foreign skilled workers.
It could also help Japan free up laborers. Japan, like many other nations, suffers from a labor shortage. The technology could free a worker to do another job.
The administration also stopped some programs - including a recent halt on H-1B visas for skilled workers - that provide an important source of money for USCIS.