We all know Hellen keller was blind, Def, and mute and some how learned to speak and write. Have there been any other documented cases of other persons in history experiencing/doing the same or similar?
Edit: fact correction on when Hellen developed her conditions
To clear up this popular misconception, Hellen Keller was not born blind, deaf and mute, she was a perfectly normal infant until she caught scarlet fever around 18 months old.