This episode explores the web’s effects on our brains and how narrative, repetition, and even a focus on replaying memories can muddy our ability to separate fact from fiction.  How do we come to believe the things we do? Why do conspiracy theories flourish? And how can we train our brains to recognize misinformation online?  Lisa Fazio, an associate psychology professor at Vanderbilt University, explains how people process information and disinformation, and how to debunk and pre-bunk in ways that can help discern the real from the fake. Music by Forever Sunset (“Spring Dance”), baegel (“Cyber Wham”), Etienne Roussel (“Twilight”), Dip Diet (“Sidelined”), Ben Elson (“Darkwave”), and Rob Smierciak (“Whistle Jazz”). Write to us at howtopodcast@theatlantic.com. Learn more about your ad choices. Visit megaphone.fm/adchoices