Conveyor belt sushi is a dining concept that lets you pick from a wide range of one of Japan's best-known foods. The idea came about 55 years ago, and it transformed sushi from pricey and sophisticated to informal and affordable, carving out an impressive niche in Japan's restaurant market. It has changed not only how sushi is served, but also sushi itself. On this edition of BEGIN Japanology, our theme is conveyor belt sushi, which combines traditional food and cutting-edge technology.