Get my new book (co-authored with Christopher Chabris), ** Nobody's Fool: Why We Get Taken In and What We Can Do About It ** available July 11, 2023. Learn more and order from Basic Books, Amazon, or your favorite local bookstore. For more information, go to https://www.hachettebookgroup.com/tit...

This video shows footage from a 1998 study by Daniel Simons and Daniel Levin in which a participant fails to notice when the person he is talking to is replaced by someone else. The study was among the first to demonstrate that the phenomenon of "change blindness" can occur outside the laboratory. This was the first of many studies by Dan Levin and I and our colleagues conducted to explore how change blindness can occur in the real world.