Since about 2001, several sectors of the economy have become increasingly inefficient, in the sense that it takes more resources to produce a given output, such as 1000 barrels of oil. I believe that this growing inefficiency explains both slowing world economic growth and the sharp recent drop in prices of many commodities, including oil.
The mechanism at work is what I would call the crowding out effect. As more resources are required for the increasingly inefficient sectors of the economy, fewer resources are available to the rest of the economy. As a result, wages stagnate or decline. Central banks find it necessary lower interest rates, to keep the economy going.
Unfortunately, with stagnant or lower wages, consumers find that goods from the increasingly inefficiently sectors are increasingly unaffordable, especially if prices rise to cover the resource requirements of these inefficient sectors. For most periods in the past, commodities prices…
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