比如说，如果要用一个成本效益分析来评估某个待立项基础设施项目的潜在收益，而这种分析又是基于诸如工资水平或房价等市场指标来进行，这样流入伦敦的投资就会越来越多，而英国北部地区则陷入投资明显减少的恶性循环。
For example, cost-benefit analyses of proposed infrastructure projects that rely on market metrics such as wage rates or property prices to assess potential benefits will create ever-increasing investment around London, and a vicious circle of apparently decreasingly attractive investment in the UK’s north.