NO.PZ2022122601000059
问题如下：
Cortez points out that RiteVal uses an econometrics approach to economic analysis, whereas GloboStats prefers a leading indicator–based approach. Cortez and Grey discuss these approaches at length.
Cortez comments: The big disadvantage to the leading indicator approach is that it has not historically worked because relationships between inputs are not static. One major advantage to the econometric approach is quantitative estimates of the effects on the economy of changes in exogenous variables.
Cortez’s comment with regard to the two different approaches to economic analysis is most likely:
选项：
A.incorrect because of the statement regarding econometrics. B.incorrect because of the statement regarding leading indicators. C.correct.解释：
Correct Answer: C
Cortez’s statement is entirely correct. A disadvantage of the leading indicators–based approach is that historically, it has not consistently worked because relationships between inputs are not static. An advantage to the econometric approach is that it provides quantitative estimates of the effects on the economy of changes in exogenous variables.
中文解析：
科尔特斯的说法完全正确。基于领先指标的方法的一个缺点是，从历史上看，它并不总是有效，因为投入之间的关系不是静态的。计量经济学方法的一个优点是，它提供了外生变量变化对经济的影响的定量估计。
为什么这里说是LEI的缺点呀，还是说LEI也有这个问题吗
