Zuckerberg's (apparent) certainty that his platform has no impact is troubling. He ought not be happy just to guess at causalityhttps://twitter.com/nytimes/status/797538220695240704 …
Replying to @emilybell
It has impact only for advertising, but what you see everyday from your social circle is just nothing since people are robots. 
3:36 PM - 12 Nov 2016
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