Revenge often feels sweet, but what price do we pay for seeking it out? Researcher James Kimmel, Jr. proposes a radical theory: our desire for vengeance operates like an addiction in the brain. This week, how “revenge addiction” plays out in our everyday lives — and on a global scale.

Hidden Brain is about to go on tour! Join us as Shankar shares seven key insights he's learned from the show over the past decade. To see if we're coming to your city, and to purchase tickets, go to hiddenbrain.org/tour.

Have you ever encountered someone who clearly knows you, but you have no idea who they are? This week, we feature a classic Hidden Brain episode about people on opposite ends of the facial recognition spectrum. Then, in the second part of the show, we bring you another perspective on facial recognition from the Revisionist History podcast. Host Malcolm Gladwell struggles with identifying faces, while producer Lucie Sullivan is exceptional at it.

Hidden Brain is about to kickoff a nationwide tour! Join Shankar as he shares seven key insights from the first decade of the show. To find out if we're coming to a city near you, and purchase tickets, go to https://hiddenbrain.org/tour/

You probably know someone who thinks they know more about something than they really do. But you could never be described that way . . . could you? This week, cognitive scientist Phil Fernbach explains the "illusion of knowledge" — the fact that we think we understand the world in much greater detail than we actually do. He'll explore why this happens, and how to close the gap between what we know and what we think we know.

Hidden Brain is about to go on tour! Join Shankar in a city near you as he shares key insights from the first decade of the show. For more info and tickets, go to https://hiddenbrain.org/tour/