Abstract: In Ill Seen Ill Said, appearance, disappearance and reappearance flattens out the opposition of the abstract and the concrete, while affect becomes an intermediary between the eye and the gaze, offering a subjective modulation of the inert world of petrified ‘things’. A muted scansion of reduction appears as the essence of change in objects. Numbers also oscillate between abstract and concrete, becoming the trace of an inexorable materiality.