‘The world is not directly given to us’, Paul Feyerabend writes in Against Method. To theorise the world, or anything really, he suggests that contemplation should be combined with practical engagement. A philosopher must become a kind of anthropologist as well, ‘both a participant and an observer’. Focusing on the two small words ‘both’ and ‘and’, this chapter promotes the contextual aspect of knowledge production. It is a contextual ethics that can unsettle the claim that some thinkers, often anchored in European intellectual history, produce universal knowledge, while other people, especially the non-European cultural others, provide only illustrations to that body of knowledge. In revisiting two fieldwork situations from the author’s ethnographic research carried out at the height of the war in Acholiland in northern Uganda, this chapter sketches a contextual ethics that unfolds uninterruptedly during anthropological fieldwork or any similar intersubjective and reflective endeavours of both participation and observation. It is argued that this contextual ethics cannot really be set beforehand, outside the enactment of the actual research, and that it is productive exactly because of its openness and vulnerability, its contextuality, and intersubjectivity.