Fiat currency is elastic - it stetches and contracts according to the demand for, and supply of, credit. So it is an unreliable tool to measure the value of anything.
George Kleinman addresses this problem and suggests a relativistic approach: compare the historical price ratios of different asset types. He admits that you can play this game forever, but it's not his fault that governments have corrupted our traditional yardstick. All you can hope for is some sense of trend, which is what all this rune-reading is for, anyway.
His conclusions: gold looks undervalued against oil, and not overvalued against either the Dow or silver. His trend feeling: a coming economic and stockmarket downturn.
Financial Sense may be run by investment advisers, but I feel their commitment to public education goes well beyond self-interest. It's a sort of University of the Air.