The same sort of scrutiny must now be turned on the diagram of enlarged reproduction. Taking Marx's second example as the basis for our test, let us again imagine a socialist society. From the point of view of a regulated society we shall, of course, have to start with Department II, not with Department I. Assuming this society to grow rapidly, the result will be an increasing demand for provisions by its members, whether they work or not. This demand is growing so quickly that a constantly increasing quantity of labour--disregarding for the moment the progress of labour productivity--will be needed for the production of consumer goods. The quantities required, expressed in terms of social labour incorporated in them, increase from year to year in a progression of, say, 2,000 : 2,215 : 2,399 : 2,600 and so on. Let us further assume that technical conditions demand an increasing amount of means of production for producing this growing quantity of provisions, which, again measured in terms of social labour, mounts from year to year in the following progression: 7,000 : 7,583 : 8,215 : 8,900 and so on. To achieve this enlargement of production, we must further have a growth in the labour performed _per annum_ according to the following progression: 2,570 : 2,798 : 3,030 : 3,284. [The figures correspond to the respective amounts of I(_v + s_) + II(_v + s_).] Finally, the labour performed annually must be so distributed that one-half is always used for maintaining the workers themselves, a quarter for maintaining those who do not work, and the last quarter for the purpose of enlarging production in the following year. Thus we obtain the proportions of Marx's second diagram of enlarged reproduction for a socialist society. In fact, three conditions are indispensable if production is to be enlarged in any society, even in a planned economy: (1) the society must have an increasing quantity of labour power at its disposal; (2) in every working period, the immediate needs of society must not claim the whole of its working time, so that part of the time can be devoted to making provision for the future and its growing demands; (3) means of production must be turned out year after year in sufficiently growing quantities--without which production cannot be enlarged on a rising scale. In respect of all these general points, Marx's diagram of enlarged reproduction has objective validity--_mutatis mutandis_--for a planned society.