We all need to listen to this: Is truth still a relevant concept? How do we determine it?

The more we read and watch online, the harder it becomes to tell the difference between what's real and what's fake. It's as if we know more but understand less, says philosopher Michael Patrick Lynch. In this talk, he dares us to take active steps to burst our filter bubbles and participate in the common reality that actually underpins everything.

This talk was presented at an official TED conference.