The best way to predict the future is to create it.
第一步是测量任何容易测量的东西。这本身没有问题。第二步是忽视无法测量的东西或给它一个任意的数值。这是人为且误导的。第三步是假设不容易测量的东西不太重要。这是盲目。第四步是说不能轻易测量的东西实际上不存在。这是自杀。
The most important single aspect of software development is to be clear about what you are trying to build.