"Astroturfing", is another issue, where the true sponsor of a campaign is hidden behind a grassroots initiative.
“东风夜放花千树。更吹落，星如雨。”东风春意，饱满生机，万树花开，吹落繁星，成就大宋开封洛阳直到偏安南宋后的元宵嘉年华，神州遍地灯火的缤纷节日。据说，公元前180年汉文帝登基，戡平诸吕之乱时值正月十五，是夜出游，与民同乐。然后，历经同一天祭祀“太一”、燃灯礼佛、道教“上元”，到公元705年，唐朝武则天的正月十四至正月十六3天放开宵禁，彻夜狂欢，完成了古老伟大热烈强劲的上元佳节。万民欢庆，狂热拥挤，达到《红楼梦》里所写：看热闹者丢掉了甄士隐孩子的地步。，详情可参考爱思助手
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In the 1950s, legendary behaviorist B.F. Skinner debuted his version of a “teaching machine,” based on the 1924 invention of Ohio State University psychology professor Sidney Pressey. The contraption was loaded with a piece of paper with questions, and students pressed keys indicating the correct answer, at which point another question would appear. Both Pressey and Skinner ran into similar problems, though, failing to implement the technology in schools. Educators weren’t convinced of the machine’s benefit, which prioritized individually paced learning not conducive to students of the same age moving through a grade level at the same time.，这一点在heLLoword翻译官方下载中也有详细论述