Thirty years from now, the child will be as old as her median-income parent is now. If real incomes grow at just 1.5% a year, the median income 30 years from now will be nearly 60% higher than the income of today’s median-income individual.
设想一位处于收入分布中间位置的30岁的新父母。三十年后，他的孩子将和他现在一般大。如果真实收入每年只增长1.5%，那么30年后的中位收入将比今天中位收入个体高出近60%。