MacMillan, Conway and Mahon introduce darkness as an active methodological condition rather than an inconvenient absence of daylight. The article challenges the temporal norm embedded in mobile research, where walking interviews are overwhelmingly conducted during the day, and asks what kinds of knowledge become available when fieldwork enters the “every night”. Darkness changes visibility, sensory attention, risk, orientation and the therapeutic or affective register of landscape; it therefore changes both the object of inquiry and the research encounter itself. The method’s conceptual significance lies in treating environmental conditions as epistemically productive. Night is not simply another time slot in a sampling schedule but a different field of perception and relation. This extends mobile methods toward sensory geography and temporal urbanism, while exposing how apparently neutral protocols quietly standardise daylight, safety and visibility. The wider bridge is to environmental epistemology: research conditions are themselves material forces that select what can be perceived, narrated and known.
