现象现象之一:做过项目的人特别是项目经理往往都会有这样的经历,在一个项目的实施过程中,用户总是不断地有新的需求提出来,感觉用户的需求就像一个“无底洞”,项目总是在不断地变更中进行。现象之二:变更越多的项目往往是我们的企业中越成功的项目,这样的项目一般都是我们开发 Phenomenon of the phenomenon: the project has done, especially project managers tend to have such an experience in the implementation of a project, the user always put forward new demands, feeling the user's needs is like a “bottomless pit ”The project is always underway. Phenomenon two: change the more the project is often the more successful projects in our business, such projects are generally we develop