On the one hand, it aims to change the behaviour of the learners in relation to the problems to be solved. [...] Meanwhile, problematizing the openness of the educational approach, since critical thinking is heavily dependent on a specific knowledge base, the didactical tool sustainability stories follows the latter and aims to provide a transparent platform for discussing the scope of the content. [...] Therefore, the second step in the work with the EPOSEA tool is to connect the aspects in the map to show the interconnections, cause-effect, and thus develop a systems perspective (Figure 2). [...] No matter what the starting point is and no matter what it is that is put in the middle of the EPOSEA model, it is part of a complex system that consists of social, technical and environmental parts, but also of structures and agents and ethical aspects and conflicts. [...] The competence of critical thinking is present in all the steps above in the sense that they challenge the broadness of the present understanding, as well as the level of realism in the interconnections described.