Note 211 — Chapter XI · THE ULTIMATE RELATION OF COST TO VALUE

This definition by itself does not of course make clear the ultimate source of this power. For proximate and practical purposes the weight of a pound nugget of gold might well be defined as its power to counterbalance in the scales a certain piece of metal, the standard troy pound. This definition contains no hint of the common source of the counterbalancing power of both weights. In the same way the above-given definition of exchange value ignores a certain common source of all exchange values.