Perhaps a more accurate criteria may be "MAN-HOUR per PENNEY-WEIGHT GOLD";furthermore,"MAN-HOUR" might be better including "man-hour PER capata" thereby complimenting the varrability of the price of GOLD;additionally,"MAN-HOUR "would be an adverage spesific to the particular country evaluatd.
Other criteria could substitute OIL or even a dozen eggs in place of "GOLD"above .![]()