Paulo Freire's concept of "inédito viável" or untested feasibility, refers to the exploration of possibilities to transcend limiting situations and transform realities. In this paper, we examine how this idea is related to the counter-hegemonic pedagogical proposal of popular education by the Florestan Fernandes National School (ENFF), an organisation founded by the Landless Workers' Movement (MST) in Brazil. We argue that the ENFF is not just a set of techniques and methodologies but a formative process that runs through the concrete reality of the subjects involved in the struggle for societal change. We conclude by proposing that the "inédito viável" that constitutes the ENFF gains meaning from a broad, collective, and dynamic vision of concrete utopia involving a clear and mobilising orientation towards the future, a strong sense of agency, reflection, experimentation, and praxis.