This paper attempts to present a set of reflections and questions that come from a theoretical -semiotical- exploration and an empirical experience in a disadvantaged neighborhood of the city of Córdoba-Argentina, around the possibilities of making effective the claim of the Latin American popular knowledge, promoted by certain critical epistemological positions. The methodological perspective of this work adopts a performatical perspective in order to capture what happens in the observed situations, understood as an integrated whole that connects, time, actors and objects in a continuum of different rhythm, sound, and emotional sensitive qualities. Performance, in this way, becomes a strategy for reading other forms of expression and construction of knowledge, questioning profoundly the notion of knowledge itself from which this kind of inquiry usually starts.