Meet Aurelien Hayman. He can remember exact details from every single day of his life starting from a very young age. Some may wonder if this is an emotionally taxing gift, but Hayman explains it’s not. The 20-year-old is one of only a handful of people in the world with hyperthymesia, which is the medical term for a highly superior autobiographical memory. Hayman is featured in a documentary by Channel 4 titled "The Boy Who Can't Forget."