An autistic savant is an autistic person with extreme talent in one or more areas of study. Although there is a common association between savant syndrome and autism (an association made popular by the 1988 film Rain Man), most autistic people are not savants and savantism is not unique to autistic people, though there does seem to be some relation. One in ten autistic people may have notable abilities, but prodigious savants like Stephen Wiltshire are very rare; only about 100 such people have been described/identified in the century since savants were first identified, and there are only about 25 living identified prodigious savants worldwide.[17]