“Born on a Blue Day: Inside the Extraordinary Mind of an Autistic Savant” by Daniel Tammet 2007 by Free Press “Bestselling author Daniel Tammet is virtually unique among people who have severe autistic disorders in that he is capable of living a fully independent life and able to explain what is happening inside his head. He sees numbers as shapes, colors, and textures, and he can perform extraordinary calculations in his head. He can learn to speak new languages fluently, from scratch, in a week. In 2004, he memorized and recited more than 22,000 digits of pi, setting a record.”