As Edward Glaeser has argued, it is hard to believe that the median family in the United States, which supposedly is worse off than in 1970, would be willing to give up its cell phones, Internet access, and new health technologies in order to return to that halcyon era. Thus, the GDP numbers must be excluding much progress.
正如爱德华·格拉瑟（Edward Glaeser）所指出的那样，我们无法相信那些据说比1970年代境况更差的美国中等收入家庭会愿意放弃自己的手机，网络和崭新的健康科技以回到过去的时代。由此可见，GDP数字必须将这类进步包含在内。