I weep for you the walrus said, I deeply sympathise,
With sobs and tears he sorted out, those of the largest size

– Walrus and the Carpenter, Lewis Carroll

In an earlier post I discussed the behavioral nature of economics and the necessity for agents to be able to rank alternatives in order to make informed choices. Let us set aside the question of how these choices are made and concentrate on understanding who these economic agents are.
There are three kinds of agents or if you like, decision making entities in a modern economic system.

1. Individuals like you and me
2. Firms or businesses
3. The government or State

The interaction between these three types of agents is determined by the nature of the socio-political system in which they are reside. In the most common characterization of what is termed a market economy, individuals make buying decisions as consumers, and these in aggregate reveal their preferences to producers or firm who are then able to determine what to produce. Of course in a command or planned economy all production decisions are determined by the state, and then transmitted to production units who then carry out production. In both these cases the firm is a passive recipient of information, acting on orders as it were from consumers or the governement. There is a however a third scenario where one firm or a group of firms act collusively to in order to determine what is to be produced and in what quantity.


Most economic systems are some combination of these three systems. Certain production decisions continue to be taken by the state in most economies. These concern the production of what are known as public goods. These are such goods that are unlikely to be produced by private firms but that are essential to the functioning of an economy such as infrastructure, defence, and expenditure on conservation of natural and cultural heritage. There has in recent times been some blurring of lines, and some debate over whether it is necessary to differentiate between private and public goods, but most economists will admit that private firms would undersupply certain goods in the absence of government intervention.

Similarly it is difficult to imagine even the most totalitarian regime continuing to produce goods that were consistently rejected by consumers.

Possibly the most contentious trend is the emergence of corporations as active determinants of the economic process. The mechanisms by which this is achieved could be direct or indirect. The direct method is through the excercise of market power, in the case of a monopoly or oligopoly. The indirect mechanism influences consumer preferences through marketing and advertising campaigns.

While economics does not usually discuss politics, it is relevant to look at how political mechanisms influence economic decisions and realities. In a democracy, political power is derived from individual votes, and thereby in theory individuals determine political decisions atleast indirectly. However large firms play an important role in the political process as well. In fact it is debatable how much influence the voting public has vis a vis large corporations in some countries.

Now it becomes necessary to try and understand how these three kinds of agents make decisions, and economics tells us that each will try and maximise some particular quantity given certain constraints. In the case of the individual, she will buy that basket of goods which maximises her utility, or in other words she will consume that combination of goods which gives her the greatest amount of satisfaction given her income. In the case of firms, there is a profit function. Now theoretically the govt should be attempting to maximise the social utility function, which is the sum total of the utility functions of all the individuals residing within a country. However there are certain analytical problems in defining this function, and it is debatable whether any govt actually attempts to maximise the welfare of all of the country’s citizens.

Now let us assume that we could determine three different outcomes by allowing each of these types of agents to maximise their own functions. How would we rank the desirabilty of each of these outcomes? One way could of course be to compare the value of the total number of goods and services produced in each case. But this quantitative measure does not take into account what individuals prefer, perhaps in one case the country produced more nuclear missiles than schools or designer handbags, how does one campare that to a scenario where the economy produces more pornographic films but less lawn mowers?

Perhaps the closest we have got to a principle which should guide us is Jeremy Bentham’s Utilitarian principle, which advocates ‘The greatest good for the greatest number of people’. However if you consider the implications of this, majority rights would always outweigh minority rights. This is a question which economics raises, but has not satisfactorily managed to answer.