The institutional evolutionism has a history before Darwin, parallel to it and even later divergent. In parallel, Darwin for the elaboration of his concept of natural selection took from the political economy the notion of population analysis by Robert Malthus, the one that also comes from the analysis of the institutions as a framework of incentives. At the time Malthus sought to refute the anarchist philosopher William Godwin, who proposed abolishing marriage as a social institution. Mindful that the extra-marital children lacked at that time fewer rights than those born in marriage, Malthus replied that such a measure would lead to an exponential growth of the population and, therefore, marriage as an institution fulfilled the containment function of population growth. A similar analysis makes Malthus of the laws of poor: aid to the poor increases the cost of food, which generates more poor, assuming the dynamics of a vicious circle. The judgments of Malthus have an empirical character that makes them susceptible of refutation, it can be verified if Malthus was right or wrong. However, what has an abstract, methodological, propaedeutic character is its population analysis. That is what Darwin took to conceive natural selection processes and that today can be used in the analysis of institutional evolution.
When one speaks of a political, economic, or social institution displacing another, such movement becomes effective at the level of the populations. For example, literacy and accounting applied to business administration generates a leap in efficiency in the administration and auditing of businesses. It is not surprising that literate traders who carry inventory and accounting processes displace illiterate traders. This is how literacy and accounting can be extended without any central political decision, nor any disruptive phenomenon. (Of course, the modern state, in its process of rationalization, can impose the obligatory nature of certain principles of accounting or schooling, but not necessarily depend on it.)
To a large extent, the arrival of European immigration to South America in the second half of the 19th century consisted in the importation of habits, practices and techniques that immigrants already incorporated. It is widely known the arrival of new techniques of field work and breeding and care of livestock. Also many immigrants who arrived implemented inventory practices and cash management that were leaking into the rest of the population.
William Easterly characterizes this phenomenon as a leaking of knowledge. Following the example of the previous paragraph: those immigrants were more competitive because they brought with them new techniques of rationalization of time, they took inventories and accounted for income and expenditure of funds methodically. This advantage translated into prosperity and expansion of their businesses. However, in order to implement this type of “technology” they must necessarily share it with their collaborators. There is in these collaborators an incorporation of human capital through what Gary Becker called “on-the-job training”: a learning of how to work at a general level (to arrive at schedule, to concentrate on the task, to meet deadlines) and also at a particular level (particular techniques of sowing, raising livestock, managing a certain inventory system). Human capital is a set of habits and practices that “travels” incorporated in each “apprentice”. In this way, the entrepreneur can finance himself by paying part of the compensation to the dependent in kind: the training. On the other hand, there is the phenomenon characterized by Easterly as “leakage of knowledge”. This knowledge is transmitted, migrated, from person to person. To the extent that it reports a greater utility to its “bearer” it is expanding, extending, throughout the social fabric, often not as a deliberate education, but as an unintended consequence of the use of such knowledge, which, for can be put into practice, needs the help of more than one person.
It is in this sense that what evolve are the practices and habits, in this case of work and business. It is extended by its incorporation by individuals who adopt them, often involuntarily, either through the incorporation of guidelines from their place of work, or through imitation or emulation. Following the terminology of evolutionism, practices and habits are the unit of evolution and the people who incorporate their replicators. A practice or habit is more successful to the extent that it extends into the population. In turn, the populations carrying practices and habits more adapted to the environment will extend them to others.