Tammet, Daniel: - Daniel Tammet is a writer, linguist, and educator. A 2007 poll of 4,000 Britons named him as one of the world's "100 living geniuses." His last book, the New York Times bestseller Born on a Blue Day: Inside the Extraordinary Mind of an Autistic Savant, has been translated into 18 languages. He lives in Avignon, France.