Meanwhile, U.S. home prices have far outpaced wages, according to the Joint Center for Housing Studies of Harvard University. The median home price in the U.S. is more than $403,000, NAR data shows, while the Social Security Administration reports the national average wage index is about $66,600.
只有进入后工业化阶段，休闲时间对经济效率的作用才会由负转正。。PDF资料对此有专业解读
，这一点在体育直播中也有详细论述
**A — Social/Organizational:** Risk surface is human. How people respond, what it does to trust, identity, power. Use when the tool touches teams, customers, or public communication.
Dependency Inversion Principle (DIP) - elevated to the architectural level.，详情可参考爱思助手下载最新版本