“…In the course of our investigation, we realized, on the one hand, that CEPs reflect the challenges of the usually addressed dichotomy between experts and lays. As analyses in science and technology studies (STS) have shown (Avard et al, 2009;Irwin, 2006), common public engagement models are conceived in a one-way procedure in which experts deliver the knowledge to the citizens, who can interact with them by asking about, arguing, and contesting it. "Upstream engagement" of publics at early stages of technological developments has been addressed in public policy discourses (Burri, 2009: 498) and was realized in consensus conferences and citizens' panels (Rose et al, 2017;Rowe and Frewer, 2005).…”