更重要的赢家是普罗大众，对他们来说，拜新技术所赐，获得知识的代价跟过去相比变得微乎其微。
Even more important winners were the people, for whom the price of access to knowledge became a fraction of what it had been.
你必须汗流满面，才得以糊口。所以，获取知识、智慧和道德自由似乎需要极大的代价。
By the sweat of your brow, shall you get bread to eat. So knowledge or wisdom or perhaps moral freedom seems to come at a very high price.
不过这种封闭的交流是以牺牲公共知识的分享为代价的，不过长远来看，课堂里的创新者们不能总是两全其美的。
That closed communication comes at the expense of public knowledge sharing, but classroom innovators may not be able to have it both ways in the long term.
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