This article[1] comes up with a "guesstimate" of 108 billion humans having ever lived, while worldwide Facebook users number only 1.7 billion[2]. [1]: http://w

This article[1] comes up with a "guesstimate" of 108 billion humans having ever lived, while worldwide Facebook users number only 1.7 billion[2]. [1]: http://www.prb.org/Publications/Articles/2002/HowManyPeopleHaveEverLivedonEarth.aspx http://www.prb.org/Publications/Articles/2002/HowManyPeopleH... [2]: http://www.statista.com/statistics/264810/number-of-monthly-active-facebook-users-worldwide/ http://www.statista.com/statistics/264810/number-of-monthly-...