Art made by a predetermined system that often included an element of chance. The practice has its roots in Dada, yet it was the pioneering artist Harold Cohen who was considered on of the first practitioners of Generative art when he used computer-controlled robots to generate paintings in the late 1960s. More recently the Turner Prize winner Keith Tyson built an ArtMachine, a complex recursive system that generated detailed propositions for artworks for Tyson to make. Generative art is predominantly used in reference to a certain kind of art made on the net, particularly because artists devise programs that can be accessed and controlled by the public. Generative art is also associated with Process art.