Since Icarus flew too close to the sun, the common story of humans and their machines tells of hopes, fears and ambitions. From Leonardo to industrialisation, the First World War and the nuclear threat, this relationship has had many chapters. People have built machines to imitate their faculties and have recognised themselves in them and developed in parallel with them. With the rise of artificial intelligence — machines that can learn by themselves — the traditional balance could be upset. Are human beings merely carbon-based prototypes of a more complex machine intelligence?