Pragmatism as theoretical foundation and research approach has been applied in different practical settings by a number of different scholars. One approach, addressing the need for considering different stakeholder's views associated with actions being performed, has been coined as co-design by Olov Forsgren. In this short paper we revisit some of the philosophical roots of co-design in an knowledge endeavour of regarding co-design as social constructive pragmatism. By doing that we try to strengthen the theoretical base for co-design as well as getting inspiration for new development of the co-design movement. Social constructive pragmatism is conceived as a social constructive process in which observations by inquirers are essential. The basic categories in co-design are the viewer often described as the actor, the viewing often described as the action and the target of the viewing, often described as the object. The meta-viewer is also an important part of co-design in viewing the whole scene of actors, actions and objects. In this paper a framework that relates co-design to an action cycle constituted by three steps (conditions, action, and result) as well as the notion of inquiry is presented.