Tamil Nadu Anna Mala University b b b b
Agriculture Economics b
FUNDAMENTALS OF ECONOMICS b b b
b
b
bb
1 NATURE AND SCOPE OF ECONOMICS
bbbb b b b b b
b
Basically man is involved in at least four identifiable relationships: a) man wit
b b b b b b b b b b b b
h himself, the general topic of psychology b) man with the universe, the study of th
b b b b b b b b b b b b b b b
e biological and physical sciences; c) man with unknown, covered in part by theol
b b b b b b b b b b b b b
ogy and philosophy d) man in relation to other men, the general realm of the social
b b b b b b b b b b b b b b b
sciences, of which economics is a part. It is hazardous to delineate these areas of i
b b b b b b b b b b b b b b b b
nquiry explicitly. However, the social sciences are generally defined to include ec
b b b b b b b b b b b
onomics, sociology, political science, anthropology and portions of history and ps
b b b b b b b b b b
ychology, Economists use history, sociology and other fields such as statistics and
b b b b b b b b b b b
mathematics as valuable adjuncts to their study.
b b b b b b b b
As a body of knowledge, economics is a relatively new subject, having been ar
b b b b b b b b b b b b b
ound formally a scant two centuries, but subsistence, wealth and the ordinary busi
b b b b b b b b b b b b
ness of life are, as we all know, as old as mankind. Economics deals with many soc
b b b b b b b b b b b b b b b b
ioeconomic issues, most of which are of immediate concern to us. Although it is te
b b b b b b b b b b b b b b
mpting to continue to discuss important economic problems, such a discussion wo
b b b b b b b b b b b
uld be premature. To form a reasoned opinion, it is necessary to analyses the issue
b b b b b b b b b b b b b b
s carefully, a process which requires a meaningful, sequential exposure to econom
b b b b b b b b b b b
ics. bb
Nature has blessed the humans with abundant natural wealth to live on this eart
b b b b b b b b b b b b b
h. Humans would have been contended with what nature provided, had they been
bb b b b b b b b b b b b b
able to peg their wants (requirements) at a given level. But it is not so, man being b
b b b b b b b b b b b b b b b b b
orn in this world is influenced by biological, physical and social needs, which kee
b b b b b b b b b b b b b
p him always busy in searching out the means to keep him satisfied. To fulfill his r
b b b b b b b b b b b b b b b b
equirements arising out of various needs, he involves in an activity called economi
b b b b b b b b b b b b
c activity. Conversely, man would have freed himself from economic activity, had
b b b b b b b b b b b
there been no resource scarcity and also what humans want can be satisfied witho
b b b b b b b b b b b b b b
ut limit. But neither of the possibilities being found because of the scarcity of reso
b b b b b b b b b b b b b b
b 1b
,urces imposed by the nature, humans always deeply engage in arriving at an equati
b b b b b b b b b b b b b
on, which balances their unlimited wants and limited means. By engaging themsel
b b b b b b b b b b b
ves in the economic activity people aim at maximizing their satisfaction from their
b b b b b b b b b b b b
bscarce resources. Thus, scarcity is the pivot for the economic activity of the peopl
b b b b b b b b b b b b b
e representing consuming and producing segments leading to the origination of a f
b b b b b b b b b b b b
ield of study called economics. The field of economics keeps on going as long as t
b b b b bb b b b b b b b b b b
he human race exists on the earth with their toiling to satisfy their ever-
b b b b b b b b b b b b b
new and ever- b b
emerging wants and satisfying the same through their efforts. Thus, the field of ec
b b b b b b b b b b b b b
onomics constitutes wants, efforts and satisfaction.
b b b b b bbbb
Two major factors are responsible for the emergence of economic problems. T
b b b b b b b b b b b
hey are: i) the existence of unlimited human wants and ii) the scarcity of available
b b b b b b b b b b b b b b b
resources. The numerous human wants are to be satisfied through the scarce resou
b b b b b b b b b b b b
rces available in nature. Economics deals with how the numerous human wants ar
b b b bb b b b b b b b b
e to be satisfied with limited resources. Thus, the science of economics centers on
b b b b b b b b b b b b b b
want - effort - satisfaction.
b b b b b
WANT b b
b
SATISFACTION b
bbbbbbbb EFFORT b
b
b b
Economics not only covers the decision making behavior of individuals but als b b b b b b b b b b b
o the macro variables of economies like national income, public finance, internati
b b b b b b b b b b b
onal trade and so on. b b b b b
b
A. DEFINITIONS OF ECONOMICS
b b b b
Several economists have defined economics taking different aspects into acco
b b b b b b b b b
unt. The word ‘Economics’ was derived from two Greek words, oikos (a house) a
b b b b b b b b b b b b b
nd nemein (to manage) which would mean ‘managing an household’ using the lim
b b b b b b b b b b b b
ited funds available, in the most satisfactory manner possible.
b b b b b b b b b
i) Wealth Definition b bb
Adam smith (1723 - b b b
b1790), in his book “An Inquiry into Nature and Causes of Wealth of Nations” (17
b b b b b b b b b b b b b b
76) defined economics as the science of wealth. He explained how a nation’s weal
b b b b b b b b b b b b b
th is created. He considered that the individual in the society wants to promote onl
b b b b b b b b b b b b b b
b 2b
,y his own gain and in this, he is led by an “invisible hand” to promote the interests
b b b b b b b b b b b b b b b b b b
of the society though he has no real intention to promote the society’s interests.
b b b b b b b b b b b b b b
Criticism: Smith defined economics only in terms of wealth and not in terms of hu
b b b b b b b b b b b b b b
man welfare. Ruskin and Carlyle condemned economics as a ‘dismal science’, as i
b b b b b b b b b b b b
t taught selfishness which was against ethics. However, now, wealth is considered
b b b b b b b b b b b b
only to be a mean to end, the end being the human welfare. Hence, wealth definitio
b b b b b b b b b b b b b b b
n was rejected and the emphasis was shifted from ‘wealth’ to ‘welfare’.
b b b b b b b b b b b b
b
ii) WelfarebDefinitionbb
Alfred Marshall (1842 - b b b
b1924) wrote a book “Principles of Economics” (1890) in which he defined “Politi
b b b b b b b b b b b b
cal Economy” or Economics is a study of mankind in the ordinary business of life;
b b b b b b b b b b b b b b b
it examines that part of individual and social action which is most closely connect
b b b b b b b b b b b b b
ed with the attainment and with the use of the material requisites of wellbeing”. Th
b b b b b b b b b b b b b b
e important features of Marshall’s definition are as follows:
b b b b b b b b b
a) AccordingbtobMarshall,beconomicsbisbabstudybofbmankindbinbthebordinarybbusine
ss of life, i.e., economic aspect of human life.
b b b b b b b b bb
b) Economicsbstudiesbbothbindividualbandbsocialbactionsbaimedbatbpromotingbecon
omic welfare of people. b b b b
c) Marshallbmakesbabdistinctionbbetweenbtwobtypesbofbthings,bviz.bmaterialbthingsba
nd immaterial things. Material things are those that can be seen, felt and touche
b b b b b b b b b b b b b
d, (E.g.) book, rice etc. Immaterial things are those that cannot be seen, felt and
b b b b b b b b b b b b b b b
touched. (E.g.) skill in the operation of a thrasher, a tractor etc., cultivation of h
b b b b b b b b b b b b b b
ybrid cotton variety and so on. In his definition, Marshall considered only the
b b b b b b b b b b b b b
material things that are capable of promoting welfare of people.
b b b b b b b b b b
Criticism: a) Marshall considered only material things. But immaterial things, suc
b b b b b b b b b b
h as the services of a doctor, a teacher and so on, also promote welfare of the peopl
b b b b b b b b b b b b b b b b b
e. b
b) Marshallbmakesbabdistinctionbbetweenb(i)bthosebthingsbthatbarebcapablebofbpr
omoting welfare of people and (ii) those things that are not capable of promoting
b b b b b b b b b b b b b b
b 3b
, welfare of people. But anything, (E.g.) liquor, that is not capable of promoting wel
b b b b b b b b b b b b b
fare but commands a price, comes under the purview of economics.
b b b b b b b b b b b
c) Marshall’sbdefinitionbisbbasedbonbthebconceptbofbwelfare.bButbtherebisbnobclea
r-
cut definition of welfare. The meaning of welfare varies from person to person, co
b b b b b b b b b b b b b
untry to country and one period to another. However, generally, welfare means ha
b b b b b b b b b b b b
ppiness or comfortable living conditions of an individual or group of people. The
b b b b b b b b b b b b b
welfare of an individual or nation is dependent not only on the stock of wealth pos
b b b b b b b b b b b b b b b
sessed but also on political, social and cultural activities of the nation.
b b b b b b b b b b b b
b
b
iii) WelfarebDefinitionbb
Lionel Robbins published a book “An Essay on the Nature and Significance of
b b b b b b b b b b b b b
Economic Science” in 1932. According to him, “economics is a science which stu
b b b b b b b b b b b b
dies human behavior as a relationship between ends and scarce means which have
b b b b b b b b b b b b b
alternative uses”. The major features of Robbins’ definition are as follows:
b b b b b b b b b b b
a) Endsbreferbtobhumanbwants.bHumanbbeingsbhavebunlimitedbnumberbofb
Wants. b
b) Resourcesborbmeans,bonbthebotherbhand,bareblimitedborbscarcebinbsupply.bTherebisb
scarcity of a commodity, if its demand is greater than its supply. In other words,
b b b b b b b b b b b b b b
the scarcity of a commodity is to be considered only in relation to its demand.
b b b b b b b b b b b b b b b b
c) Thebscarcebmeansbarebcapablebofbhavingbalternativebuses.bHence,banyonebwillbch
oose the resource that will satisfy his particular want. Thus, economics, accordi
b b b b b b b b b b b
ng to Robbins, is a science of choice.
b b b b b b b b
Criticism: a) Robbins does not make any distinction between goods conducive to
b b b b b b b b b b b b
human welfare and goods that are not conducive to human welfare. In the producti
b b b b b b b b b b b b b
on of rice and alcoholic drink, scarce resources are used. But the production of rice
b b b b b b b b b b b b b b
promotes human welfare while production of alcoholic drinks is not conducive to
b b b b b b b b b b b b b
human welfare. However, Robbins concludes that economics is neutral between e
b b b b b b b b b b
nds. bb
b) In economics, we not only study the micro economic aspects like how resou
b b b b b b b b b b b b
rces are allocated and how price is determined, but we also study the macroecono
b b b b b b b b b b b b b
b 4b