E) Part of the problem is that the country's largest industries are in decline. In the past, it was perfectly clear where young people should go for work (Chicago in the 1870s, Detroit in the 1910s, Houston in the 1970s) and, more or less, what they’d be doing when they got there (killing cattle, building cars, selling oil). And these industries were large enough to offer jobs to each class of worker, from unskilled laborer to manager or engineer. Today, the few bright spots in our economy are relatively small (though some promise future growth) and decentralized. There are great jobs in Silicon Valley, in the biotech research capitals of Boston and Raleigh-Durham and in advanced manufacturing plants along the southern z-85 corridor. These companies recruit all over the country and the globe for workers with specific abilities. (You don't need to be the next Mark Zuckerberg, founder of Facebook, to get a job in one of the microhubs (微中心)，by the way. But you will almost certainly need at least a B. A. in computer science or a year or two at a technical school.) This newer, select job market is national, and it offers members of the mobile class competitive salaries and higher bargaining power.
F) Many members of the immobile class, on the other hand, live in the America of the gloomy headlines. If you have no specialized skills, there’s little reason to uproot to another state and be the last in line for a low-paying job at a new auto plant or a green-energy startup. The surprise in the census (普查) data, however, is that the immobile workforce is not limited to unskilled workers. In fact, many have a college degree.
G) Until now, a B. A. in any subject was a near-guarantee of at least middle-class wages. But today, a quarter of college graduates make less than the typical worker without a bachelor's degree. David Autor, a prominent labor economist at M. I. T. , recently told me that a college degree alone is no longer a guarantor of a good job. While graduates from top universities are still likely to get a good job no matter what their major is, he said, graduates from less-famous schools are going to be judged on what they know. To compete for jobs on a national level, they should be armed with the skills that emerging industries need, whether technical or not.
H) Those without such specialized skills—like poetry, or even history, majors一are already competing with their neighbors for the same sorts of second-rate, poorer-paying local jobs like low-level management or big-box retail sales. And with the low-skilled labor market atomized into thousands of microeconomics, immobile workers are less able to demand better wages or conditions or to acquire valuable skills.
I) So what, exactly, should the ambitious young worker of today be learning? Unfortunately, it’s hard to say, since the US doesn't have one clear national project. There are plenty of emerging, smaller industries, but which ones are the most promising? (Nanotechnology's (纳米技木)moment of remarkable growth seems to have been 5 years into the future for something like 20 years now.) It’s not clear exactly what skills are most needed or if they will even be valuable in a decade.
J) What is clear is that all sorts of government issues -education, health-insurance portability, worker retraining—arc no longer just bonuses to already prosperous lives but existential requirements. It's in all of our interests to make sure that as many people as possible are able to move toward opportunity, and America's ability to invest people and money in exciting new ideas is still greater than that of most other wealthy countries. (As recently as five years ago, US migration was twice the rate of European Union states.) That, at least, is some comfort at a time when our national economy seems to be searching for its next story line.