Does the customer invent new product or service? The customer generates nothing. No customer asked for electric lights. There was gas and gas mantles, which gave good light. The first electric lights had carbon filaments. They were fragile and inefficient. No customer asked for photography. No customer asked for the telegraph, nor for a telephone. No customer asked for an automobile. We have horses: what could be better? No customer asked for pneumatic tires. Tires are made of rubber. It is silly to think of riding on air. The first pneumatic tires in the United States were not good. The user had to carry with him rubber cement, plugs, and a pump, and know how to use them.