translation.en: So I took the 600 summaries that I had, put them into nine groups according to the ratings that the talks had originally received on TED.com and asked people to do summaries of those.
translation.zh: 于是我用了手头这600个总结， 放在9个群组里 对应于它们在TED.com网站上的评分 并请人们去做这些总结。