When Daniel Tammet thinks about numbers, each one has a distinct personality. Thirty-seven is lumpy, for example; four is shy. He has a rare form of autism that gives him astonishing mental powers, such as effortlessly calculating huge numbers in his head with the speed of a computer.
Author Daniel Tammet talks about his new book Born on a Blue Day: Inside the Extraordinary Mind of an Autistic Savant, and his amazing facility with numbers.
Daniel Tammet, author of Born on a Blue Day: Inside the Extraordinary Mind of an Autistic Savant