“This paper reflects a long tradition of utopian thought in engineering, a tradition in which the progressive application of human reason to nature is projected to make the market obsolete. This promise comes in at least two versions. One tendency, epitomised by the ‘red cyberneticists’ in the Soviet Union, primarily objects to the irrationality of the price mechanism, and strives to replace the market with computers as a means of allocating resources (Dyer-Witheford, 2013). The second tendency, to which Rep-rap project arguably belongs, looks forward to the day when wealth is so abundant that scarcity will have been superseded, and markets with it.