To evaluate the cost/benefit tradeoff of our approach, which we call PBR-UP, we performed a case study in the context of a small software development project (an object-oriented information system).

Study of Satety Economy can benefit from this method and put Safety Analysis to coal mine, and then settle the problem of the optimization of maximizing Safety Function against minimizing Safety Cost.

The theory of micro-economics is mainly used to study how to make the investigative benefit maximum with minimum investigative cost while the economic analysis is made.