If you have that gnawing feeling that you\u2019re forgetting something, chances are you\u2019re right. And it may not be your keys, but something a little bigger. C\xe9sar Hidalgo, director of MIT\u2019s Collective Learning Group, explains how society experiences generational forgetting.
\n\nHidalgo says: even if you have a pristine memory, time greatly impacts the names, books, movies, and historical events that are common knowledge at any given moment. Researching how culture gets passed down (or doesn\u2019t) from generation to generation can tell us more about why some famous people stay relevant, while others seem to fade away.