An erstwhile wise man once observed that everything in life is cyclical. We are not sure how inclusive the use of the word "everything" was intended, but those of us involved with commodities and commodity markets are certainly familiar with cycles. Thus, we noted with interest an article in yesterday's issue of The Wall Street Journal suggested another kind of cyclical movement is underway. The article highlights the flow of investment money out of funds that replicate the price action of a specifically selected, arbitrarily weighted group of commodities: the infamous index funds.Simply put, index funds mimic a specific commodity index by holding long positions in each of the commodities included in the index in volumes that reflect the...