Today production in South America or the Black Sea region and demand from China, North Africa or Southeast Asia are as important and influential to markets as production and demand in North America. This can also dilute or disperse the impact of price on supply and demand.Two of our favorite economic “laws” related to commodity markets are: the best cure for high prices is high prices and the flipside corollary, the best cure for low prices is low prices. The first presumes that high prices will inspire consumption to decline and supplies to increase to the point that supply and demand are better balanced, causing prices to retreat. The corollary presumes that low prices will encourage higher consumption and reduce supplies, causing prices...