Memory plays an important role in guiding people through their lives. But experts say that as the years go by and we grow and develop, our recollections adjust with us, whether we know it or not. Russ Mitchell talks with NYU research psychologist Elizabeth Phelps about the elasticity of memory, and with veteran writers David Halberstam, Gay Talese and A.E. Hotchner, who have all navigated that murky area between history and memory. Originally broadcast January 7, 2007; winner of a 2008 News Emmy Award for Outstanding Feature Story in a Regularly Scheduled Newscast.