This paper presents a method for future-building based on the journey we undertook as Design and Arts researchers in POR EL Páramo project (2021-2022) in our aim to bring closer the different actors involved in the Paramos (high Andean moorlands in Boyacá region, Colombia). We did this by understanding their everyday life better, and co-designing potential pathways towards holistic sustainable futures that serve the various communities’ needs. Through a series of social innovation workshops, we applied transdisciplinary approaches aimed at decolonising the methodologies used and its facilitation dynamics. The outcomes include our contribution to design and arts-based methodologies that aids continuity to the process of reflection: In(ward), Out(ward) and On(ward). In deploying this decolonisation-based methodology, a more powerful underlying principle came to light too: the use of arts mobilises forms of knowledge that are rather unconscious, but also extremely efficacious in generating proactive mindsets and generating bottom-up ideas. In this paper we build on and argue further, from an empirical perspective, for the utilisation of the tacit knowledge that can be transmitted through non-verbal means in social research dealing with contexts of conflict, reconciliation, and future building.