Money is itself a measure.
Money is a measure of wealth, it is not wealth itself. Much as a ruler is a measure of length, not length itself.
The ability to measure 1,000 km does not equate to the capacity to travel 1,000 km.
The ability to measure a hectare of land does not equate to the possession of a hectare of land.
The ability to measure a year's worth of labour productivity, or industrial output, does not equate to the realisation of a year's worth of productivity.
And financial units absent the goods and services that they can access ... are worthless.
