I think Philip Fernback makes an important point aboout what it means to be human in this talk.:
"Consider how common it is for groups of people to believe things that just aren't true.
Right now, in this moment, it feels like we're in the midst of an epidemic.
The explosion of fake news shows how easy it is to dupe people on the left and the right, and science denial has gone mainstream.
Simplistic explanations ... aren't getting us anywhere.
If we really want to improve the way we grapple with these challenges, we have to go deeper, we have to understand what it is about the way we think that makes us so susceptible to believing things that aren't true.
And that explanation actually begins with a kind of shocking observation.
As individuals, we do not know enough to justify almost anything we believe."
You can watch Philip's full TEDx talk here