What happens when an ordinary school is submitted to take part in a competition run by four successive mathematical empires, and when robot teaching evolves into a global robot rising that threatens to overthrow human ruling of the world? Blue Valley is the story of the history and future of math, a drama we are all involved in: every school or university, every pupil or student, every teacher, every citizen in this world of science. A science based on math. As for many languages, math changes during its path on discovery and invention. Its urge to explore the world from every thinkable angle resembles the art of music. Math is, in fact, a language, says the author of this book. He should know, acquainted with odd languages such as shorthand writing, several different computer programming languages, sign language, graphic languages and less odd ones like German, Swedish and English.