We’ve been preparing a hall for a banquet all day, arranging furniture, hanging and rehanging decorations, working so fast and with such intensity that we wouldn’t be able to explain the basis on which we’ve been working. It’s late. The guests are coming soon. We’ve got to race home and get dressed. We pause in the doorway, taking in the whole room at once. We see nothing to change. By not darting back in to adjust even one more thing, we pronounce the room perfect (we approve it)—and that work of art is finished.

