Economics is a science that deals with various problems which can be summarized in four questions:
What products are produced in a society and in what quantities?
How these products are produced?
How are these products distributed to the members of society?
How to increase the amount of products, namely how to develop the economy of a society?
If we were living in the economy of Robinson Crusoe we could say that all decisions were made by one and for one and only person.
What raw materials were used to build a cave, how will he find his food, what will he use to increase his products, all those referred to the technology of the production process. This is an example of one’s person economy without any problems in production and distribution, while on the contrary in modern economies millions of people take simultaneously, but separately their own decisions.(Cook,Robberts,Waylen.2000)
As a part of the economy, economic man is a term that refers to a hypothetical individual who acts rationally and selflessly. An economic man has the following characteristics: the pursuit of maximizing utility and personal interest with rational behavior. This means that economic man, makes decisions according to
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Economic man chooses among goods that benefit him most, compares and decides which product is better and which is suitable for him and his need, while acting like a producer seeks to maximize profit. Economic man can always make a decision when he faces a sequence of alternative possibilities, classified all the options according to his preferences, so that either one is better than another or letting indifferent, either be lower in preference to another. The ranking of preferences has a transitional capacity; he selects everything between those alternatives that are placed higher in the range of preferences. (Numri,