崩溃啊 请教一道GWD11里的阅读 经济增长率那篇 附原文

rabbiteido

原文

(This passage is excerpted from material published in 1997) 　　Whereas United States economic productivity grew at an annual rate of 3 percent from 1945 to 1965, it has grown at an annual rate of only about 1 percent since the early 1970’s. What might be preventing higher productivity growth? Clearly, the manufacturing sector of the economy cannot be blamed. Since 1980, productivity improvements in manufacturing have moved the United States from a position of acute decline in manufacturing to one of world prominence. Manufacturing, however, constitutes a relatively small proportion of the economy. In 1992, goods-producing businesses employed only 19.1 percent of American workers, whereas service-producing businesses employed 70 percent. Although the service sector has grown since the late 1970’s, its productivity growth has declined. Several explanations have been offered for this declined and for the discrepancy (差距)in productivity growth between the manufacturing and service sectors. One is that traditional measures fail to reflect service-sector productivity growth because it has been concentrated in improved quality of services. Yet traditional measures of manufacturing productivity have shown significant increases despite the under measurement of quality, whereas service productivity has continued to stagnate. Others argue that since the 1970’s, manufacturing workers, faced with strong foreign competition, have learned to work more efficiently in order to keep their jobs in the United States, but service workers, who are typically under less global competitive pressure, have not. However, the pressure on manufacturing workers in the United States to work more efficiently has generally been overstated, often for political reasons. In fact, while some manufacturing jobs have been lost due to foreign competition, many more have been lost simply because of slow growth in demand for manufactured goods.
　　Yet another explanation blames the federal budget deficit: if it were lower, interest rate would be lower too, thereby increasing investment in the development of new technologies, which would spur productivity growth in the service sector. There is, however, no dearth of technological resources, rather, managers in the service sector fail to take advantage of widely available skills and machines. High productivity growth levels attained by leading edge service companies indicate that service sector managers who wisely implement available technology and choose skillful workers can significantly improve their companies’ productivity. The culprits for service-sector productivity stagnation are the forces-such as corporate takeovers and unnecessary governmental regulation-that distract managers from the task of making optimal use of available resources.

这篇文章的答案我没什么问题，但是文章的最后一段的逻辑我没怎么看明白：
文章最后一段说另一种解释是政府预算赤字，赤字低，利率低，对新科技的投资就多，service sector的productivity就高。然后来了句There is, however, no dearth of technological resources, rather, managers in the service sector fail to take advantage of widely available skills and machines.
我的疑问是： 那既然不缺technological resources，有什么好blame预算赤字的？？？而且感觉这一段的后面一堆都没说和预算赤字的关系啊。。。

求各位NN指教！！