In Every Word Is a Bird We Teach to Sing, Tammet goes back in time to London to explore the numeric language of his autistic childhood; in Iceland, he learns why the name Blær became a court case; in Canada, he meets one of the world's most accomplished lip readers. He chats with chatbots; contrives an "e"-less essay on lipograms; studies the grammar of the telephone; contemplates the significance of disappearing dialects; and corresponds with native Esperanto speakers - in their mother tongue. Every Word Is a Bird We Teach to Sing explores the way communication shapes reality.