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## The standard commodity: an inevitable measure of value

If we consider the wage as the independent variable, the choice of the standard becomes obviously signiﬁcant. The standard chosen should coincide with the commodities actually bought by the wage earners. However, we cannot assume those purchases as known except in two extreme cases: when the net wage is zero, the gross wage is necessarily spent in buying the subsistence basket; and when the net wage is at its maximum, it is spent buying the entire surplus.