Page:Das Kapital (Moore, 1906).pdf/360

 Nevertheless, within certain limits, a modification takes place. The labour realised in value, is labour of an average social quality; is consequently the expenditure of average labour-power. Any average magnitude, however, is merely the average of a number of separate magnitudes all of one kind, but differing as to quantity. In every industry, each individual labourer, be he Peter or Paul, differs from the average labourer. These individual differences, or “errors” as they are called in mathematics, compensate one another, and vanish, whenever a certain minimum number of workmen are employed together. The celebrated sophist and sycophant, Edmund Burke, goes so far as to make the following assertion, based on his practical observations as a farmer; viz., that “in so small a platoon” as that of five farm labourers, al] individual differences in the labour vanish, and that consequently any given five adult farm labourers taken together, will in the same time do as much work as any other five. But, however that may be, it is clear, that the collective working day of a large number of workmen simultaneously employed, divided by the number of these workmen, gives one day of average social labour. For example, let the working day of each individual be 12 hours. Then the collective working day of 12 men simultaneously employed, consists of 144 hours; and although the labour of each of the dozen men may deviate more or less from average social labour, each of them requiring a different time for the same operation, yet since the working day of each is one-twelfth of the collective working day of 144 hours, it possesses the qualities of an average social working day. From the point of view, however, of the capitalist who employs these 12 men, the working day is that of the whole dozen. Each individual man’s day is