Math is just too damn difficult for Facebook. What to know about two more measurement errors

Facebook is having a difficult time counting. 
The social network revealed new measurement errors Friday related to engagement on live videos and any links to direct users outside of Facebook. That's the third time since September Facebook has admitted to miscalculations, drawing ire from publishers and advertisers and reemphasizing a need for third-party verification. 
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Facebook reported that none of the errors dire