The answer to these questions cannot be resolved any time soon with standard econometric techniques because E-Commerce is too recent a phenomenon to be modeled in any defensible way. A different approach, therefore, seems called for, one that attempts to extrapolate judgmental estimates of the likely impact of the Internet at the industry level based on estimates by individual firms and analysts, suitably adjusted where appropriate, and then adds up the results to see what they imply for the overall economy.

这个问题难以用标准经济学的原理予以快速应答.这是由于电子商务被以各种可防御的方式模仿已成为一种越来越频繁现象.
因此,就需要有另一种方法,在单一公司或分析家们评估基础上对于互联网上工业经济可能产生的影响做出判断性的预期,并做出适当的调整,然后再看对总体经济所产生的影响.