从三个force展开经济周期论很清楚，生产力和长短债务周期。最后从个人层面给了三个忠告，不要让债务增长的比收入快，否则最终将压垮你dont have debt rise faster than income，不要让收入增长的比能力快，否则你最终将不具备竞争力(在经济萧条时非常危险)dont have income rise faster than productivity，because you eventually become uncompetitive，倾尽所能地提高生产力，综艺玩很大长期来看至关重要 do all that you can to raise your productivity, because that's what matters most in a long run.