Did Brian Williams lie, exaggerate, or misremember? How certain are you that your most vivid memories are real? How easily could someone implant a false memory into your mind? In this episode you'll learn why psychologists say that your memory is mostly fiction as psychologist Daniel Simons explains how Brian Williams could have easily believed in a detailed war coverage memory that wasn't real, and you'll hear psychologist Julia Shaw explain how she was recently able to easily implant memories into college so that those students would admit to felony crimes that they did not commit.