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This video of the British autistic savant artist Stephen Wilthire's trip to Tokyo last year is also on his website.
"As a child, Stephen was mute and did not relate to other human beings. Aged three, he was diagnosed as autistic. He had no language, uncontrolled tantrums and lived entirely in his own world...It soon became apparent he communicated with the world through the language of drawing; first animals, then London buses, and finally buildings. These drawings show a masterful perspective, a whimsical line and reveal a natural innate artistry".