Since commodity prices have moved up and down in a cyclical fashion as long as prices have been recorded, there has developed a cottage industry of economists and analysts who attempt to fit those cycles into patterns.It is axiomatic to say that prices for freely-traded raw material commodities move up and down in cycles that tend to reflect changing relationships between available supplies and demand. After all, the best cure for high prices or low prices is respectively high prices and low prices, to paraphrase one of our favorite market-related sayings.The ability of price movements to stimulate or restrict production and encourage or discourage demand for freely-traded commodities is the single most important fundamental factor in the w...