The Projector Metaphor by David Hoffmeister – “Inside the projector space, inside the projector, is this glowing, fantastic, radiant light-weight. That’s an incredible metaphor for your Holy Spirit. That amazing gentle seems to pass through the film, that's filled with loads of darkish photographs…” The term “Mastering” is loosely applied https://www.youtube.com/channel/UCTleG6-484F7WHZD0hAjRRw