When individuals witness a crime, they often feel confident in their ability to identify the perpetrator later. However, psychological research consistently shows that this confidence is frequently misplaced. A 2011 study conducted in the United States found that 63% of participants incorrectly believe that human memory operates like a video camera, allowing people to 'replay' past events with perfect clarity.

In reality, memory is reconstructive rather than reproductive. When a witness attempts to recall a face, they are not retrieving a static file from their brain; they are piecing together fragments of information that can be easily influenced by external factors, stress, or the passage of time. This misconception about how memory works leads many people to overestimate their own accuracy. Because of this, legal experts and psychologists have long warned that eyewitness testimony, while often compelling to juries, is one of the most common causes of wrongful convictions. The gap between how we think our brains work and how they actually function remains a significant challenge for the justice system.