Calibration cubes under fluorescent lab light

Stark fluorescent tubes cast a flat, clinical glow across a university research room in Colmar. A complex robotics vision rig sits centrally, its sensors fixed on a cluster of colored calibration cubes arranged on a metal table. To the right, a vertical crack in the concrete wall releases a steady waterfall that flows directly onto the floor, defying any plumbing logic. The water spreads in a shallow sheet, creating muted reflections that mirror the cubes and the rig. The predawn darkness presses against the windows, against the harsh artificial light. The scene remains grounded in the visible physics of the lab, except for the impossible water source. one drop of water rests on the edge of a steel calibration cube.