This reminds me of that line in World of Tomorrow "The robots are solar-powered, and must always be kept on the light side of the moon’s surface. To motivate t

This reminds me of that line in World of Tomorrow "The robots are solar-powered, and must always be kept on the light side of the moon’s surface. To motivate them to constantly move within the drifting sunlight, I programmed them to fear death, and what lies on the dark side of the moon."