As we see, we can relate the notion of design to both aspects of human agency that we introduced previously: • Design is the sign that mediates market dynamics in connecting producers and users, and therefore we can approach markets as the societal form that realise the semiosis of the technosphere. • Design mediates, enables and produces human agency vis à vis the functions that are fulfilled by the effect produced by the artefactual mechanism; semiosis establishes distributed agency.