然而，专家和官员们选择我们的同伴们，并将其活动引向良性方向的顺利程度有几何尚无法确定。
Far less certain, however, is how successfully experts and bureaucrats can select our peer groups and steer their activities in virtuous directions.
一个人类小孩的集体会用各种各样的语言和手势来形成目标和协调各种活动，但年幼的黑猩猩似乎对于他们的同伴在想什么没有兴趣。
A group of human children will use all kinds of words and gestures to form goals and coordinate activities, but young chimps seem to have little interest in what may be their companions' minds.
在美国，同伴一起玩，但并不是做什么都在一起，这一现象并不很少见。不同种类的朋友参加不同的活动。
It's not uncommon in the U.S. for friends to enjoy each other's company but not do everything together; often different friends enjoy different activities.
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