“What is Zen for Film?”, I was asked on the occasion of a preparatory meeting for Revisions, an exhibition to feature Zen for Film (1962–64), Nam June Paik’s “blank” film projection. Despite the many discussions that preceded the meeting, when it came to the question of what the main—and the only—artwork of this exhibition was, we felt as if we’d been left in the dark. Is Zen for Film an idea, a concept—or rather, an event, a performance, or a process? In its original form, Revisions: Zen for Film combined a research project, pedagogy, an exhibition, and an exhibition catalogue. Revised again in the following pages, Revisions is an exercise in slow looking. It questions the ambition of constructing the work with a fixed identity, a product that moves seamlessly from the studio to the world of dissemination, distribution, and display. Instead, Zen for Film will appear once again as an assemblage of people, things, and events, a vibrant materiality destined for a changeable future.