The combination of lower energy prices, innovative information technologies, and advances in robotics and materials science are powering a manufacturing revolution that will reinvigorate the U.S. economy and make many of its industrial sectors the most competitive in the world. 

More is being produced, and fewer workers are needed. Between 2000 and 2010, the United States lost 5.7 million manufacturing jobs.

如果看懂了马克思的经济危机理论， 作者就会额头见汗， 美国的生产关系已经阻碍生产力的发展了。 机器人就是资本主义的掘墓人。