Contact—so tactile, so evocative of the touch of one person on another, physically and emotionally. Trace—a way to get back to an earlier point and a reckoning with the remains of that initial encounter. Filmmaker Lynne Sachs has saved every business card anyone has ever given her. After 40 years of collecting, she recognizes their mnemonic powers. With 600 cards in her grasp, Sachs contemplates the impact of these haptic exchanges. In both real and imagined ways, her essay teases apart their vivid resonances, entwining emotional memory with geopolitical history through visual abstraction, music, and a poet’s sense of introspection.