Zhang wrote that the Louisville enterprise zone (EZ) was more successful than what previous research showed and that variations in research design have led to conflicting or mixed reviews of many local economic development policies that are based on the EZ concept. She mentions a study and an article on the Louisville, Kentucky EZ and implies the time horizon used to evaluate it was too short. This Forum/Letter to the Editor points out that the Louisville EZ went through multiple transformations and expansions over its history from 1983 to 2003, and as noted in the first of two studies, the original zone showed virtually no progress from 1983 to 1990. Several other unpublished papers pointed out the same results when the original EZ and other parts of the expanded EZ were analyzed up to the last years of the 20th century. Finally, this Forum/Letter to the Editor argues that and provides reasons for the methodology employed by Lambert and Coomes as a superior way of analyzing the Louisville EZ when compared with the methods employed by Zhang. The main reason why Zhang showed success in the EZ is because she mostly evaluates it in its final form in the late 1990s after it had annexed many sections of Jefferson County, which were not as nearly economically disadvantaged as the original Louisville EZ established in 1983.

Zhang写道，路易斯维尔企业区（EZ）比以前的研究更为成功，而且研究设计的变化导致对许多基于EZ概念的地方经济发展政策产生矛盾或混杂的评论。她提到肯塔基州路易斯维尔市的一项研究和一篇文章，并暗示用来评估它的时间范围太短。致编辑的论坛/信中指出，路易斯维尔EZ在1983年至2003年的历史上经历了多次转型和扩展，并且正如两项研究中的第一项所指出的那样，原始区域在1983年至1990年期间几乎没有进展。在分析原始EZ和扩展EZ的其他部分直到20世纪最后几年时，其他未发表的论文也指出了相同的结果。最后，本论坛致编辑的信认为，与张所采用的方法相比，兰伯特和库姆所采用的方法是分析路易斯维尔EZ的一种优越方法，并提供了理由。张之所以在EZ中取得成功的主要原因是，由于在1990年代后期吞并了杰斐逊县的许多地区之后，她主要以最终形式对其进行了评估，而这些地区在经济上没有1983年建立的最初的路易斯维尔EZ那么差。