In a world teeming with data, we ourselves become the maths gurus' most prized specimens. In They've Got Your Number..., Stephen Baker takes us on a guided tour (no maths required) through an unprecedented new era. Much in the same way as neuroscientists are mapping our brains, mathematicians are mapping our behaviour - what we do, who we are, how we work, chat, play and shop - everything that makes us individuals. In doing so, they will change every aspect of our lives. They've Got Your Number... examines one of the great undertakings of the twenty-first century - the mathematical modelling of humanity. It's a world that otherwise might seem remote or disconnected, but one which is absolutely relevant to our everyday lives.