There was an entirely black screen, square, floor-to-ceiling, near the middle of the space, people around it, talking, holding drinks. It looked like a giant version of one of those old flat displays that Wilf had on his desk, the first time she’d seen him. Wilf kept moving, looking as though he knew where he was going, but she assumed he didn’t. From a slightly different angle, now, she saw the black screen wasn’t entirely blank, but showed, very dimly, a woman’s face. "What’s that?" she asked Wilf, nodding in its direction.