Autism(自闭症) is a disorder of the brain that happens in the first three years of life. It affects the brain's normal development. Most autistic patients have difficulty talking with other people or doing things. However, some of the autistic people have amazing abilities. For example, some can memorize many things and some can do calculations really fast.
Raymond Babbitt in the 1988 film Rain Man is an example. The character in the film was based on Kim Peek, a man from the USA. Peek couldn't switch on a light or put his clothes on by himself. But his memory was so amazing that he could remember almost anything. He could memorize every road, place and distance on maps. He could even remember almost every word in thousands of books. His way of reading was more amazing. Peek could read two pages at the same time in just eight to ten seconds. He read the left page with his left eye and the right page with his right eye.
Scientists still don't know for sure why some autistic people have special talent after they have done a lot of research. There is one possible explanation. When certain parts of the brain are damaged! by autism, other parts of the brain might get stronger. Therefore special abilities were born.
But not all people with autism have amazing abilities. In fact, autistic people with amazing abilities are rare (罕有的) and the abilities cannot be trained. According to research, only ten percent of autistic people show any signs of special talent.
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