This chapter explores ideas of disrupting as an improvisatory process that ‘corrupts’ ethnographic and design principles when they are brought together to undermine the certainties that inform conventional ways of knowing.As we discuss, this abandonment of certainty gives rise to discomfort, yet also shows possible ways to produce avenues of knowing about things not yet encountered, possible alterities and potential futures.As such, we place value upon uncertainty and put the not-yet-made at the centre of inquiry: ethnographers/designers are substantively engaged in processual worlds where they work with emergent qualities and people who are sharing their journey into the immediate future.