A pool of reflective water can act as a simple mirror, and is all you really need to see yourself, but a “looking glass” lifts one’s appearance to a different perspective. Feng Shui teaches that an auspiciously placed mirror enhances ch’i. Robert Adam, the 18th-century Scottish architect, regarded mirrors as integral to expanding spatial illusion within a room. Strategically angled metal reflectors were used by ancient Egyptian builders to carry sunlight into the excavation of their pyramids.