Candlestick Charting

http://www.aspenres.com/Documents/AspenGraphics4.0/Candlestick_History.htm

In 17th century Japan had a flourishing rice market. At the time there were four social classes; the soldier, the farmer, the artisan, and the merchant, were ruled by a military government known as the Bakufu, who were growing increasingly weary of the merchant class. So Bakufu killed the greedy merchants children and banished them from Japan. This discouraged greed in the merchant class for many years.

At the same time Shogun Tokugawa's Shogunate got rid of the feudal system and made the rice market national. There is a system of charting called Candlestick Charting, which makes it easy to understand the production and predict future productions. The rice dealers started using this system.