Nobody knows, but there's a theory which won't answer your question but will put it into a broader context.

没有人知道答案,但有这么个理论,它无法回答你的问题,但却能让你从更宽广的视角来看这个问题

耶鲁公开课 - 心理学导论课程节选

which is significant is that lot got reading about those websites but almost no one saw them, because they were removed from public view within a few minutes after the shooting took place in the high school.

重要的是,很多人都知道了他们的网站,但没有几个人真正上过这个网站，因为这一事实被掩盖于公众眼前,不过几分钟的时间在枪击案,发生在高中里。

麻省理工公开课 - 媒体、教育、市场课程节选

Nobody can see the interest rate-- why the interest rate's at the level it is in the market-- because nobody can see all these individuals; but that's why the interest rate gets determined and is in equilibrium.

没有人能知道,为什么市场利率会是现在的结果,因为没有人能知道其他人的想法,但市场利率就是这样确定并达到均衡

耶鲁公开课 - 金融市场课程节选