In the small community of PAS, everyone is both
a producer and consumer. In PAS, the school produces its service of education
for the students and provides educated graduate for college. The students, of
course, are the consumers that pay for the education. However, they also play a
role of producer that sometimes gives lessons to teachers. The teachers thus
always "updated" due to the reciprocal relation. The school produces
the education through lectures as the students provide their latest information
through the conversation during classes. It is ultimate the producer to choose
what, how, and for whom the goods and services would be produced. The profit
motive makes the producers choose the most efficient way to produce and
targeting the potential consumers.
Every producer
made their decisions out of self-interest. In the PAS example, the teachers
might pursue their interest of desiring teaching and getting salary. Their
interests could be achieved by working in PAS. They will give lectures while
the students will pay the tuition. Thus at the same time the teachers can both
fulfill the desire for teaching and receive payments. Also, the students are
making the choice out their self-interest. They wanted to be educated (or at
least their parents want them to be educated) and get into a good college so
they choose to get in PAS. Not wasting their payments, they might work hard
during class so that they could ensure they have a better chance for applying
college.
Both the
students and the teachers reflect that their self-interest can benefit the social
interest. Social interest is seeking for pursuing the most efficient and fair
use of resource. Efficiency can be
achieved when the available resources are used to produce goods and services at
the lowest possible cost and in the quantities that give the greatest possible benefit.
Self-interest can
provide this efficiency
because of the profit motive base. The producer tends to try to minimize their
cost and maximize the profits. Therefore it can make the best use of scarce
resource thus fulfill the social interest.