Over the course of the past few centuries there have been a small number of savant people, who weren’t born autistic, but later became genius mathematicians, musicians, painters, writers or sculptors due to developing the Savant syndrome usually by an injurious accident.
One such case is the case of Orlando L. Serrell. He was born 1968. In January 1979 the young Orlando was playing baseball and he got hit on the left side of the head with the ball. The boy thought it wasn’t worth taking a break and continued with the game. However, as it later turned out, the hit was a life-changing one for Mr. Serrell. He started suffering from some serious headaches, but didn’t tell his parents about the accident at first. At some point the headaches stopped and that’s when Serrell realized he was no longer the same old guy. He was able to perform extremely complex calendrical calculations on his own.
And as if that isn’t fascinating enough, he also gained the ability to tell the weather, place and activity he had experienced every single day since his accident!