Gary Becker made the distinction between two types of on-the-job training: general and specific. The former consist of the skills of wide applicability, which enable the worker to perform satisfactorily different kinds of jobs: to keep one’s commitments, to arrive on time to work, to avoid disturbing behavior, etc.. All of them are moral traits that raise the productivity of the worker whichever his occupation would be. On the other hand, specific on-the-job training only concerns the peculiarities of a given job: to know how many spoons of sugar your boss likes for his coffee or which of your employees is better qualified to deal with the public. The knowledge provided by the on-the-job training is incorporated to the worker, it travels with him when he moves from one company to another. Therefore, while the general on-the-job training increases the worker productivity in every other job he gets, he makes a poor profit from the specific one.
Of course, it is relative to each profession and industry whether the on-the-job training is general or specific. For example, a psychiatrist who works for a general hospital gets specific training about the concrete dynamics of its internal organization. If he later moves to a position in another hospital, his experience dealing with the internal politics of such institutions will count as general on-the-job training. If he then goes freelance instead, that experience will be of little use for his career. Nevertheless, even though the said psychiatrist switches from working for a big general hospital to working on his own, he will carry with him a valuable general on-the-job training: how to look after his patients, how to deal with their relatives, etc.
So, to what extent will on-the-job training gained by a successful businessman enable him to be a good statesman? In the same degree that a successful lawyer, a successful sportsman, a successful writer is enabled to be one. Every successful person carries with him a set of personal traits that are very useful in almost every field of human experience: self confidence, work ethics, constancy, and so on. If you lack any of them, you could hardly be a good politician, so as you rarely could achieve anything in any other field. But these qualities are the typical examples of general on-the-job training and what we are inquiring here is whether the specific on-the-job training of a successful businessman could enable him with a relative advantage to be a better politician -or at least have a better chance of being a good one.
The problem is that there is no such a thing as an a priori successful businessman. We can state that a doctor, an engineer, or a biologist need to have certain qualifications to be a competent professional. But the performance of a businessman depends on a multiplicity of variables that prevents us from elucidating which traits would lead him to success.
Medicine, physics, and biology deal with “simple phenomena”. The limits to the knowledge of such disciplines are relative to the development of the investigations in such fields (see F. A. Hayek, “The Theory of Complex Phenomena”). The more those professionals study, the more they work, the better trained they will be.
On the other hand, the law and the market economy are cases of “complex phenomena” (see F. A. Hayek, Law, Legislation and Liberty). Since the limits to the knowledge of such phenomena are absolute, a discovery process of trial and error applied to concrete cases is the only way to weather such uncertainty. The judge states the solution the law provides to a concrete controversy, but the lawmaker is enabled to state what the law says only in general and abstract terms. In the same sense, the personal strategy of a businessman is successful only under certain circumstances.
So, how does the market economy survive to its own complexity? The market does not need wise businessmen, but lots of purposeful ones, eager to thrive following their stubborn vision of the business. Most of them will be wrong about their perception of the market and subsequently will fail. A few others will prosper, since their plans meet -perhaps by chance- the changing demands of the market. Thus, the personal traits that led a successful businessman to prosperity were not universal, but the right ones for the specific time he carried out his plans.
Having said that, would a purposeful and stubborn politician a good choice for government? After all, Niccolo Macchiavelli had pointed out that initiative was the main virtue of the prince. Then, a good statesman would be the one who handles successfully the changing opportunities of life and politics. Notwithstanding, The Prince was -as Quentin Skinner showed- a parody: opportunistic behaviour is no good to the accomplishment of public duties and the protection of civil liberties.
Nevertheless, there is still a convincing argument for the businessman as a prospect of statesman. If he has to deal with the system of checks and balances -the Congress and the Courts-, the law will act as the selection process of the market. Every time a decision based on expediency collides with fundamental liberties, the latter must withstand the former. A sort of natural selection of political decisions.
Quite obvious, but not so trite. For a stubborn and purposeful politician not to become a menace to individual and public liberties, his initiative must not venture into constitutional design. No bypasses, no exceptions, not even reforms to the legal restraints to the public authority must be allowed, even in the name of emergency. Especially for most of the emergencies often brought about by measures based on expediency.