Once upon a time a fool was wandering around in the dark. There are great treasures to be found as well as stubbed toes and noses. "If only I had a lamp!" shouts the fool. By chance someone who does have a lamp is within earshot and steps over. "Here take this." says the kind stranger. The fool feels out the object in it's hands. There is a lens and a handcrank. Turning the crank makes a tiny amount of light, and turning it vigorously makes a small amount. "I don't want this!" says the fool. "I want a lamp not an exercise machine!"