alt Hacker News> Near the end of his life, Molaison regularly filled in crossword puzzles.[16] He was able to fill in answers to clues that referred to pre-1953 knowledge. As for post-1953 information, he was able to modify old memories with new informations. For instance, he could add a memory about Jonas Salk by modifying his memory of polio.[2]
That's fascinating!
The nature of memory is so cool, the idea that there are completely different systems governing the creation of wholesale "new" memories and the modification of existing concepts is fascinating to me because those things really do "feel" different in a qualitative sense, but having evidence that you're physically doing something different in those cases is really cool.