To answer the question, all alternatives must be examined, and a complete assessment made of the three aspects of technology, finances and the environment. Only then can a proper evaluation be made. Presently all reports are too rough.
則必須列舉所有替代方案，就技術、財務及環境三方面做優劣評分以後，才能做適當的考量，但現有的報告都過於粗略。