“…In fact, students had 'key boundary-spanning' roles (Cash et al, 2003) in the research and in the area. Boundary spanners can perform key boundary-spanning roles (Akkerman and Bakker, 2011;Cremers et al, 2016;Oonk, 2016;De Kraker, 2017 Overall, it can be concluded that lock-in situations are risky, in that they can slow down or lock in social learning. However, at the same time, the interventions to overcome them by using boundary spanners, change agents and facilitators can create and support ways forward: as new roles, knowledge, actions and relations are formed in the process of social learning.…”