AA B12!!!urgent!

cecilechina19

12.The following appeared in a research paper written for an introductory economics course:

“For the past century, an increase in the number of residential building permits 居住用建筑许可数
        issued per month in a particular region has been a reliable indicator of coming improvements to that region’s economy. If the monthly number of residential building permits issued rises consistently for a few months, the local unemployment rate almost always falls and economic production increases. This well-established connection reveals an effective method by which a regional government can end a local economic downturn: relax regulations governing all construction so that many more building permits can be issued.”

Discuss how well reasoned . . .etc.

求解题思路！！ 谢了

我只想出correlation 不等于 causal relationship，但是也想不出为什么它们之间会有这种correlation.??

还有其他的points吗？

helphelp

rio

参考7宗罪：

过去成立的将来未必成立：也许居民建筑已达到饱和，再多就会产生负效应

最后一句，all construction不是居民建筑，模糊了概念

cecilechina19

thank u  Rio