The term Rain Man is a derogatory term that identifies a mentally and, or, socially impaired individual; it’s also a term that often refers to autistic individuals. The term was highlighted in the 1988 film of the same name. The story was based on the life of Kim Peek, who was considered a megasavant but was not known to be autistic. He had a prodigious memory even at the early age of 16 months. In later years, he was able to read an entire book in an hour and retain the information in it. He could also read the left page of a book with his left eye, as well as the right page with his right eye. Peek was thought to have FG syndrome, whereby one or more recessive genes are located on the X chromosome.