What is the relevance of economics?

Question

Please give examples

Answer 1

The importance of economics derives from the specific importance of wealth—of material goods—to human life and well-being. But provisionally its importance can be accepted on a common-sense basis. Obviously, human life depends on food, clothing, and shelter. Moreover, experience shows that there is no limit to the amount of wealth that practically all civilized men and women desire, and that the greatest part of their waking hours is actually spent in efforts to acquire it—namely, in efforts to earn a living.

Yet the importance of wealth, by itself, is not sufficient to establish the importance of economics. Robinson Crusoe on a desert island would need wealth, and his ability to produce it would be helped if he somehow managed to salvage from his ship books on various techniques of production. But it would not be helped by books on economics. All that books on economics could do for Crusoe would be to describe abstractly the essential nature of the activities he carries on without any knowledge of economics, and, beyond that, merely to provide the possible intellectual stimulation he might feel as the result of increasing his knowledge of the society from which he was cut off. Something more than the importance of wealth is required to establish the importance of economics.

Answer 2

commerce: buying and selling things we need

Answer 3

my English is not that good, but i believe it is irrelevant