Phillip Magness points to this interesting aspect of Keynes thinking. He gave a lecture tracking history of laissez faire and said there are three areas where laissez faire needs to be done away and we need a central control – banking, need for population control and savings/investment:
I come next to a criterion of Agenda which is particularly relevant to what it is urgent and desirable to do in the near future. We must aim at separating those services which are technically social from those which are technically individual. The most important Agenda of the State relate not to those activities which private individuals are already fulfilling, but to those functions which fall outside the sphere of the individual, to those decisions which are made by no one if the State does not make them. The important thing for government is not to do things which individuals are doing already, and to do them a little better or a little worse; but to do those things which at present are not done at all.
It is not within the scope of my purpose on this occasion to develop practical policies. I limit myself, therefore, to naming some instances of what I mean from amongst those problems about which I happen to have thought most.
Many of the greatest economic evils of our time are the fruits of risk, uncertainty, and ignorance. It is because particular individuals, fortunate in situation or in abilities, are able to take advantage of uncertainty and ignorance, and also because for the same reason big business is often a lottery, that great inequalities of wealth come about; and these same factors are also the cause of the unemployment of labour, or the disappointment of reasonable business expectations, and of the impairment of efficiency and production. Yet the cure lies outside the operations of individuals; it may even be to the interest of individuals to aggravate the disease. I believe that the cure for these things is partly to be sought in the deliberate control of the currency and of credit by a central institution, and partly in the collection and dissemination on a great scale of data relating to the business situation, including the full publicity, by law if necessary, of all business facts which it is useful to know. These measures would involve society in exercising directive intelligence through some appropriate organ of action over many of the inner intricacies of private business, yet it would leave private initiative and enterprise unhindered. Even if these measures prove insufficient, nevertheless, they will furnish us with better knowledge than we have now for taking the next step.
My second example relates to savings and investment. I believe that some coordinated act of intelligent judgement is required as to the scale on which it is desirable that the community as a whole should save, the scale on which these savings should go abroad in the form of foreign investments, and whether the present organisation of the investment market distributes savings along the most nationally productive channels. I do not think that these matters should be left entirely to the chances of private judgement and private profits, as they are at present.
My third example concerns population. The time has already come when each country needs a considered national policy about what size of population, whether larger or smaller than at present or the same, is most expedient. And having settled this policy, we must take steps to carry it into operation. The time may arrive a little later when the community as a whole must pay attention to the innate quality as well as to the mere numbers of its future members.
Population is surely an issue on both under and over side. But how does state determine the right size of population?
Clearly, these control policies were making rounds in Keynes mind much before his General Theory..