劳动生产率的较大部分增长来自于计算机和通信技术的革命-这使得高科技资本的有效性大幅增加，而其成本则大幅降低。
A bigger part of this increased productivity comes from the extraordinary technological revolutions in computers and communications that have led to dramatic increases in the usefulness - and decreases in the cost - of high-tech capital.