The production hall of a small dairy early on a May morning, walked at eye height: white tile, a wet floor and stainless tanks, with dawn light through the reception door where the milk tanker stands. Four stations in SOP order (reception, CIP, valve manifold, release dock); at each, a surface cue that looks like proof (the tanker gauge, a green panel lamp, a worn line label, a release stamp) stands next to the record you have to open and an over-cautious move. A glass teaching line above the stations fills white, amber or red after each call. Every decision in this scene can also be made with the buttons in the controls panel.
