In the Victorian era, plaster casts became a way to preserve important artifacts in 3-D. Now, virtual reality promises to preserve places and experiences. But who decides what gets preserved? And is the technology an accurate recreation of the experience, or does it fool us into thinking we’ve encountered the real thing when we’ve done nothing of the sort? Guests include: Jaron Lanier, VR pioneer; Nonny de la Pena, VR artist; Tristram Hunt, director of the Victoria and Albert Museum.